PhysicsPhysics QuestionsCollision Questions for CBSE Class 11th

Collision Questions for CBSE Class 11th

A particle of mass 1kg with kinetic energy of 8 Joule makes an elastic head on collision with a stationary particle which has twice its mass. Then the fraction of energy transferred to the second body is

A ball of mass 2 kg dropped from a height H above a horizontal surface rebounds to a height h after one bounce. The graph that relates H to h is shown in figure. If the ball was dropped from an initial height of 81 m and made ten bounces, the kinetic energy of the ball immediately after the second impact with the surface was

    Fill Out the Form for Expert Academic Guidance!



    +91


    Live ClassesBooksTest SeriesSelf Learning




    Verify OTP Code (required)

    I agree to the terms and conditions and privacy policy.

    A particle of mass m moving in the X direction with speed 2v is hit by another particle of mass 2m moving in the Y direction with speed v. If the collision is perfectly inelastic, the percentage loss of energy during the collision is close to

    Coefficient of restitution depends upon

    A ball A moving with a certain velocity collides with another ball B of the same mass at rest. If the coefficient of restitution is e, the ratio of the velocities of A and B just after the collision is

    A particle collides with 15 ms − 1 at an angle 60 0 from vertical on a smooth horizontal surface. The coefficient of restitution (e) is 1 3 . The range R, as shown in diagram will be

    A metal ball falls from a height of 10 metro on a steel plate and bounces back to a height of 2 .5metre. The coefficient of restitution of the ball is

    A particle of mass m kg moving with a velocity ( 3 i ^ + 2 j ^ ) ms – 1 collides with a stationary body of mass M kg and finally moves with a velocity ( – 2 i ^ + j ^ ) ms – 1 . If m M = 1 13 , then

    In an inelastic collision,

    A ball impinges directly upon another ball at rest and is itself brought to rest by the impact. If half of initial kinetic energy is destroyed in the collision, the coefficient of restitution is

    Particle m 1 experiences a perfectly elastic collision with a stationary particle m 2 . After the collision (head-on) the particles fly apart in opposite directions with equal speeds, then

    A body falls from a height of 16 m and rebounds to a height of 4m. The coefficient of restitution is :

    Two identical balls, of equal masses A and B, are lying on a smooth surface as shown in figure. Ball A hits ball B (which is at rest) with a velocity v = 16 m/s. What should be the minimum value of coefficient of restitution between A and B so that B just reaches the highest point of inclined plane?

    A body of mass 1 kg, moving with velocity 10 m/s collide inelastically head-on with another body of mass 2 kg moving in the same direction. After the collision, the first body continues to move in the same direction with velocity 6 m/s. If e = 0.5, find the velocity of centre of mass of the two bodies.

    A sphere of mass m moving with a constant velocity u hits another stationary sphere of same mass. If e is the coefficient of restitution, then ratio of velocities v 2 v 1 of the two spheres after collision will be

    An object of m kg with speed of v m/s strikes a wall at an angle θ and rebounds at the same speed and same angle. The magnitude of the change in momentum of the object will be

    A block A of mass m and a pan P of equal mass are connected by a string passing over a smooth light pulley. Initially the system is at rest. A particle of mass m falls freely from height h on the pan and sticks to it. The speed with which A moves just after the collision is

    During the collision a relatively large force acts on each colliding particle for a relatively ––– – time

    A ball is projected from the ground with speed 10 ms -1 at an angle 45 0 with horizontal. It collides with wall at a distance '4m' from the point of projection and returns to its original position. The coefficient of restitution between ball and wall is

    A block m 1 strikes a stationary block m 3 inelastically. Another block m 2 is kept on m 3 . Neglecting the friction between all contacting surfaces, the fractional decrease of K. E. of the system in collision is:

    A ball of mass m, moving with a velocity u, along X-axis, strikes another ball of mass 2 m kept at rest. The first ball comes to rest after collision and the other breaks into two equal pieces. One of the pieces starts moving along the y-axis with a speed V. The velocity of the other piece is

    In an elastic collision between two billiard balls. The variation of elastic potential energy is represented by the graph (here r is the distance between centres of the balls and R is radius of the ball)

    A sphere of mass 0.3 kg moving with a velocity of 4 m/s collides with another sphere of mass 0.5 kg which is at rest. Assuming the collision to be elastic, their velocities after the impact are

    A 6 kg mass collides with a body at rest. After the collision, they travel together with a velocity one third the velocity of 6 kg mass. The mass of the second body is

    Two steel spheres approach each other headon with the same speed and collide elastically. After the collision one of the sphere's of radius r comes to rest. The radius of the other sphere is

    A moving particle of mass 'm' makes head on elastic collision with a particle of mass '2m' which is initialy at rest. The fraction of K.E. lost by colliding particle is

    A simple pendulum is hanging from a peg inserted in a vertical wall. Its bob is stretched in horizontal position from the wall and is left free to move. The bob hits on the wall the coefficient of restitution is 2 5 . After how many collisions the amplitude of vibration will become less than 60°

    A particle falls from a height h upon a fixed horizontal plane and rebounds. If e is the coefficient of restitution, the total distance travelled before rebounding has stopped is

    A steel sphere A is at rest on a frictionless horizontal surface. Another identical sphere B moving with velocity 2m/s collides head on with A. If coefficient of restitution e = 0.5, fraction of kinetic energy of B lost in the process is

    A ball is dropped from a height of 5 m. If it rebound upto height of 1.8 m, then the ratio of velocities of the ball after and before rebound is :

    A bullet of mass 10 gm moving with a horizontal velocity 100m/s passes through a wooden block of mass 100 gm. The block is resting on a smooth horizontal floor. After passing through the block the velocity of the bullet is 10m/s. the velocity of the emerging bullet with respect to the block is

    If the coefficient of restitution be 0.5, what is the percentage loss of energy on each rebounding of a ball dropped from a height

    A sphere of mass m moving with a constant velocity u hits another stationary sphere of the same mass’ If e is the coefficient of restitution, then ratio of velocities of the two spheres after collision will be

    A sphere of mass m moving with a constant velocity v hits another stationary sphere of the same mass. If e is the coefficient of restitution, then the ratio of velocities of the two spheres, after the collision will be

    A girl throws a ball with initial velocity v at an inclination of 45°. The ball strikes the smooth vertical wall at a horizontal distance d from girl and after rebounding returns to her hand. What is the coefficient of restitution between wall and ball ?

    A glass marble dropped from a certain height above the horizontal surface reaches the surface in time t and then continues to bounce up and down. The time in which the marble finally comes to rest is

    A particle A of mass m initially at rest slides down a height of 1.25 m on a frictionless ramp, collides with and sticks to an identical particle B of mass m at rest as shown in the figure. Then, particles A and B together collide elastically with particle C of mass 2m at rest. The speed of particle C after the collision with combined body (A + B) would be (Take, g = 10 ms – 2 )

    A ball of mass m is released from the top of an inclined plane of inclination θ as shown in figure. It strikes a rigid surface at a distances 3 h 4 from top elastically. Impulse imparted to ball by the rigid surface is

    When a body of mass m 1 moving with uniform velocity 40 ms – 1 collides with another body of mass m 2 at rest, then the two together begin to move with uniform velocity of 30 ms – 1 . The ratio of the masses (i. e. m 1 /m 2 ) of the two bodies will be

    A body of mass 4m is lying in .xy-plane at rest. It suddenly explodes into three pieces. Two pieces each of mass m move perpendicular to each other with equal speeds v. The total kinetic energy generated due to explosion is

    A ball moving with velocity 9 ms – 1 collides with another similar stationary ball. If after the collision, both the balls move in directions making an angle of 30° with the initial direction, then their speeds after collision will be

    Two billiard balls of same size and mass are in contact on a billiard table. A third ball of the same size and mass strikes symmetrically and then comes to rest right after the impact. The coefficient of restitution between the balls is

    A moving block having mass m , collides with another stationary block having mass 4 m . The lighter block comes to rest after collision. When the initial velocity of the lighter block is v , then the value of coefficient of restitution (e) will be

    Two spheres moving in opposite directions with velocities u 1 and u 2 collide will each other. If e is the coefficient of restitution, their distance of separation at time ‘t’ after collision is

    Body A of mass 4 m moving with speed u collides with another body B of mass 2 m , at rest. The collision is head on and elastic in nature. After the collision the fraction of energy lost by the colliding body A is

    On a frictionless surface, a block of mass M moving at speed ν collides elastically with another block of same mass M which is initially at rest. After collision the first block moves at an angle θ to its initial direction and has a speed ν 3 . The second block’s speed after the collision is

    A bullet of mass 10 g moving horizontally with a velocity of 400 m s – 1 strikes a wood block of mass 2 k g which is suspended by light inextensible string of length 5 m . As a result, the centre of gravity of the block found to rise a vertical distance of 10 c m . The speed of the bullet after it emerges out horizontally from the block will be

    Two identical balls “A” and “B” having velocities of 0 . 5 m s – 1 and – 0 . 3 m s – 1 respectively collide elastically in one dimension. The velocities of B and A after the collision respectively will be

    Two particles of masses m 1 , m 2 move with initial u 1 a n d u 2 . On collision, one of the particles get excited to higher level, after absorbing energy ε . If final velocities of particles be ν 1 a n d ν 2 then we must have

    A ball hits the floor and rebounds after an inelastic collision. In this case:

    A smooth sphere is moving on a horizontal surface with velocity vector 2 i ^ + 2 j ^ immediately before it hits a vertical wall. The wall is parallel to j ^ vector and the coefficient of restitution e = 1 2 between the sphere and the wall is . The velocity vector of the sphere after it hits the wall is

    A ball of mass m moving with a speed u undergoes a head – on elastic collision with a ball of mass nm initially at rest. The fraction of the incident energy transferred to the heavier ball is

    A smooth steel ball strikes a fixed smooth steel plate at an angle α = 45 0 with the vertical. If coefficient of restitution is e = 1 3 , the angle at which the rebound will take place is

    A satellite of mass ‘m’ is moving in a circular path of radius r around earth has areal velocity ‘A’. If the radius changes by 1%, what will be the change in its areal velocity?

    The Collision between both blocks shown in figure is completely inelastic. The total energy of oscillation after collision is

    A steel sphere A of mass m, moving with velocity 4 m/s, collides elastically and obliquely with another identical stationary steel sphere B. After the impact sphere B starts moving with velocity V making an angle of 60 o with the original direction of sphere A. Find V.

    A 20 g bullet pierces through a plate of mass M 1 = 1 kg and then comes to rest inside a second plate of mass M 2 = 2.98 kg as shown in Fig. It is found that the two plates, initially at rest, now move with equal velocities. Find the percentage loss in the initial velocity of the bullet when it is between M 1 and M 2 . Neglect any loss of material of the plates due to the action of bullet.

    A hockey player receives a corner shot at a speed of 15 m/s at angle 30° with y-axis and then shoots the ball along x-axis with the speed 30 m/s. If the mass of the ball is 150 g and it remains in contact with the hockey stick for 0.01 s, the force exerted on the ball along x-axis is

    If two masses m 1 and m 2 collide, the ratio of change in magnitude of their respective velocities is proportional to

    Three identical blocks A, B and C are at rest. But A is approaching towards B with a speed 10m/s. The coefficient of restitution for all collisions is 0.5. The speed of the block C just after collision is approximately

    A particle of mass 0.1 kg moving with an initial speed v collides with another particle of same mass kept at rest. If after collision total energy becomes 0.2 J. Then

    A smooth sphere is moving on a horizontal surface with velocity vector 2 i ^ + 2 j ^ immediately before it hits a vertical wall. The wall is parallel to j ^ vector and the coefficient of restitution between the sphere and the wall is e = 1/2. The velocity vector of the sphere after it hits the wall is

    A sphere of mass 2 kg moving with velocity of 4 m/s collides head on with a stationary sphere of mass 4 kg during the course of collision, average impulse acting on the 4 kg sphere is 8 N-S. Then the coefficient of restitution is

    A 2 kg wooden block is suspended from fixed point by a light string of length 1 m. A body of mass 0.5 kg moving horizontally with velocity ‘V’ strikes the block and sticks to it. After the impact the composite body swings in a vertical circle and comes to rest momentarily when the string is horizontal then V =

    Two particles of masses m 1 and m 2 in projectile motion have velocities and respectively at time t = 0. They collide at time t 0 . Their velocities become and at time 2t 0 while still moving in air. The value of is

    A ball is bouncing down a flight of stairs. The coefficient of restitution is e. The height of each step is d and the ball descends one step each bounce. After each bounce it rebounds to a height h above the next lower step. The height is large enough compared with the width of step so that the impacts are effectively head on. Find the relationship between h and d

    Consider following statements A and B and identify the correct answer A : Coefficient of restitution varies between '0' and '1'. B : In inelastic collision, the law of conservation of energy is satisfied.

    Consider the following statements 'A' and 'B' and identify the correct answer. A : In an elastic collision, if a body suffers a head on collision with another of same mass at rest, the first body comes to rest while other starts moving with the velocity of first one. B : Two bodies of equal masses suffering a head on elastic collision exchange their velocities.

    Match the following List – I List – II a) Elastic collision e) e = 0 b) Inelastic collision f) 0 < e < 1 c) Explosion g) e = 1 d) Plastic collision h) Final K.E. > Initial K.E.

    A sphere of mass M 1 , moving with a velocity v 0 collides head on with a stationary sphere of mass M 2 . The collision is elastic. V 1 and V 2 are respectively their velocities immediately after collision. List – I List – II a) M 1 = M 2 e) V 1 = – V 0 , V 2 = 0 b) M 1 << M 2 f) V 1 = 0, V 2 = V 0 c) M 1 >> M 2 g) V 0 < V 2 < 2V 0 d) 2M 1 > M 1 +M 2 h) V 1 = V 0 , V 2 = 2V 0

    A body of mass 1 kg makes an elastic collision with another body at rest and continues to move in the original direction after collision with a velocity equal to 1/5th of its original velocity. Find the mass of the second body.

    A steel sphere of mass 100 gm moving with a velocity of 4 m/s collides with a dust particle elastically moving in the same direction with a velocity of 1 m/s. The velocity of the dust particle after the collision is (dust particle is of negligible mass)

    A perfectly elastic ball P 1 of mass m moving with velocity v collides elastically with three exactly similar balls P 2 , P 3 , P 4 lying on a smooth table as shown. Velocities of the four balls after the collision are

    Two spheres A and B moving in opposite directions have velocities of 10ms -1 and 20ms -1 . The two spheres collide with each other elastically. If A continues to move in the same direction at 4 m s – 1 , the velocity of sphere B just after the collision is

    A ball impinges directly upon another ball at rest and is itself brought to rest by the impact. If half of initial kinetic energy is destroyed in the collision, the coefficient of restitution is

    A block of mass m moving with speed v collides with another block of mass 2m at rest. The lighter block comes to rest after the collision. The coefficient of restitution is

    A moving block having mass m, collides with another stationary block having mass 4m. The lighter block comes to rest after collision. When the initial velocity of the lighter block is v, then the value of coefficient of restitution (e) will be

    A particle of mass m moving with velocity 2v collides with another particle of mass 3m moving with velocity v in the same direction. If it is perfect inelastic collision, the loss of K.E. of the system is

    A massive ball moving with speed v collides head on with another stationary ball having mass very much smaller than the mass of the first ball. The collision is elastic. Then immediately after the impact, the second ball will move with a speed approximately equal to

    Body A of mass 4m moving with speed u collides with another body B of mass 2m, at rest . The collision is head on and elastic in nature. After the collision the fraction of energy lost of the colliding body A is:

    A dumbell consisting of two masses m each, connected by a light rigid rod of length l , falls on two pads of equal height, one steel and the other brass through a height h. The coefficients of restitution are e 1 and e 2 (e 1 < e 2 ). To what maximum height will the centre of mass of the dumbell rise after bouncing off the pads?

    Two perfectly elastic balls of same mass m are moving with velocities u 1 and u 2 . They collide elastically n times. The kinetic energy of the system finally is

    A ball A, moving with kinetic energy E, makes a head on collision with a stationary ball with mass n times that of A. The maximum potential energy stored in the system during the collision is

    A body 'x' with a momentum 'p' collides with another identical stationary body 'y' one dimensionally. During the collision 'y' gives an impulse 'J' to the body 'x'. Then the coefficient of restitution is

    If an ivory ball of mass 2m moving with a velocity 'v' strikes head on to a close row of three identical ivory balls each of mass m as shown in the figure. Then after the collisions which may be assumed as elastic, which of the following would occur?

    A steel ball of mass 1 kg, moving with a velocity of 2 m/s collides head-on and elastically with an identical steel ball. What is impulse acting on the second ball during the course of collision?

    A body P of mass 2m moving with velocity u collides head-on with a stationary body Q of mass m. After the collision, the bodies coalesce. Then percentage loss of energy of P in the process is

    A ball of mass m moving with velocity V, makes a head on elastic collision with a ball of the same mass moving with velocity 2V towards it. Taking direction of V as positive velocities of the two balls after collision are

    A ball of mass m is moving normally towards a wall of mass M(>> m) with a velocity 4 m/s. The wall is also moving. After striking elastically with the wall, velocity of ball becomes 8 m/s. Find the speed of the wall :

    A metallic sphere is dropped from a height 20 m above the horizontal hard floor. The sphere strikes the floor in turn and rebounds several times. If the dropped sphere makes 2 nd impact with floor after a time interval of 4 seconds from the time of dropping, the distance travelled by the sphere during that time is g = 10 ms – 2

    A sphere A of mass m moving with a velocity hits another stationary sphere B of same mass. If the ratio of the velocities of the sphere after collision is v A v B = 1 – e 1 + e where e is the coefficient of restitution, what is the initial velocity of spheres A with which it strikes?

    A steel ball is released from a height of 27 m onto a fixed horizontal steel plate. On bouncing the ball rises to a height of 3 m. Then co-efficient of restitution is

    Two equal spheres A and B lie on a smooth horizontal circular groove at opposite ends of a diameter. At time t = 0, A is projected along the groove and it first impinges on B at time t = T 1 and again at time t = T 2 . lf e is the coefficient of restitution, the ratio T 2 T 1 is

    A ball collides impinges directly on a similar ball at rest. The first ball is brought to rest after the impact. If half of the kinetic energy is lost by impact, the value of coefficient of restitution (e) is

    A ball moving with velocity 2 ms – 1 collides head on with another stationary ball of double the mass. If the coefficient of restitution is 0.5, then their velocities (in ms – 1 ) after collision will be

    Body A of mass m and B of mass 3m move towards each other with velocities V and 2V respectively from the positions as shown, along a smooth horizontal circular track of radius r. After the first elastic collision, they will collide again after the time:

    The bob A of a simple pendulum is released when the string makes an angle of 45° with the vertical. It hits another bob B of the same material and same mass kept at rest on the table. If the collision is elastic, then

    A ball is projected vertically down with an initial velocity from a height of 20 m onto a horizontal floor. During the impact it loses 50% of its energy and rebounds to the same height. The initial velocity of its projection is

    A particle of mass m moving with velocity v strikes a stationary particle of mass 2m and sticks to it. The speed of the system will be

    When two bodies collide elastically, then:

    A ball moving with a velocity v strikes a wall moving towards the ball with a velocity u as shown in fig. An elastic impact occurs. Consider the mass of the wall to be infinitely great. The work done by the wall during collision is

    Two marbles, A and B, lie on a smooth horizontal circular groove at opposite ends of a diameter. A is projected along the grove and at the end of time t impinges on B. The coefficient of restitution is ‘ e ’. The time interval between first and second collision is

    A particle moving horizontally with a velocity u strikes a fixed frictionless sphere at a height R/2 above the center of sphere. After striking the sphere, velocity of particle changes to vertically upward .If R be the radius of sphere, the maximum height attained by the particle with respect to center of sphere is

    A ball is dropped from a height I on the ground. If the coefficient of restitution is e, the height to which the ball goes up after it rebounds for the nth time is

    A neutron traveling with a velocity u and kinetic energy E.collides perfectly elastically head-on with the nucleusof an atom of mass number A at rest. The fraction of total energy retained by neutron is

    . A particle of mass m moving eastward with a speed v collides with another particle of the same mass moving northward with the same speed v’ . The two particles coalesce on collision. The new particle of mass 2 m will move in the north-easterly direction with a velocity

    If the coefficient of restitution between a ball and the floor is 0.5, what is the percentage loss of energy on each rebounding of a ball dropped from a height ?

    If two balls, each of mass 0 .06 kg, moving in opposite directions with speed a m m/s, collide and rebound with the same speed, then the impulse imparted to each ball due to other is

    A plate of mass M remains in equilibrium in air when n bullets are fired per second on it. The mass of each bullet is m and it strikes the plate with speed v’ If the coefficient of restitution is e, then (M>>m)

    A ball hits the floor and rebounds after inelastic collision. In this case

    Which one of the following statements is true ?

    A body of mass M moving with velocity v undergoes a head on collision with a body of mass m moving with the same velocity but in opposite direction. If the two body stick together after the collision, the speed of the common body will be

    Two perfectly elastic objects and of identical mass are moving with velocities 15 m/s and 10 m/s respectively, collide along the direction of line ioining them. Their velocities after collision are respectively

    A ball of mass m moving with a speed u undergoes a head on collision with a ball of mass n m initially at rest. The fraction of incident energy transferred to heavier ball is

    A mass m moves with a velocity v and collides elastically with another identical mass. After collision the first mass moves with velocity v / 3 direction perpendicular to the initial direction of motion. Find the speed of the second mass after collision

    Two balls A and B of same mass and a third ball of mass M are arranged over a smooth horizontal surface as shown in fig.(1) Ball A moves with a velocity v 1 towards ball B and C. All collisions are assumed to be elastic. lf. m>M , the number of collisions between B and C

    A neutron traveling with a velocity v and K’E. E collides perfectly elastically head-on with the nucleus of an atom of mass number A at rest. The fraction of total energy retained by neutron is

    Two identical balls B and C, in contact with each other and at rest on a horizontal friction less table, are hit head-on by another identical ball A moving initially with a speed v as shown in fig. (3). What is observed, if the collision is elastic ?

    which of the following is not a perfectly inelastic collision ?

    Three particles each of mass m are located at vertices of an equilateral triangle ABC. They start moving with equal speeds each along the meridian of the triangle and collide at its center G. If after collisions A comes to rest and B returns its path along GB, then C

    A bullet of mass A and velocity B is fired into a block of mass C and sticks to it. The final velocity of the system equals

    If two balls, each of mass 0.06 kg, moving in opposite directions with speed 4 m/s, collide and rebound with the same speed, then the impulse imparted to each ball due to other is

    A sphere of mass m moving with a constant velocity v hits another stationary sphere of the same mass m. If e is the coefficient of restitution, then the ratio of velocities of the two spheres, after the collision will be

    A billiard ball moving with a speed of 5 m/s collides with an identical ball, originally at rest. If the first ball stops dead after collision, then the second ball will move forward with a speed of

    Two equal masses m, and m, moving along the same straight line with velocities + 3 m/s and -5 m/s respectively collide elastically. Their velocities after the collision will be respectively

    An object of mass 2 kg is moving with a velocity of 3 m/s and collide head-on with an object B of mas 1 kg moving in the opposite direction with a velocity of 4 m/s. After collision both objects coalesce so that they move with a common velocity v equal to

    A ball of mass m moving with a certain velocity collides against a stationary ball of mass m. The two balls stick together during collision. If E be the initial kinetic energy, then the loss of kinetic energy in the collision is

    A metal baII of mass 2 kg moving with a velocity of 36 km/h has an head-on collision with a stationary ball of 3 kg. If after the collision, the two balls move together, the loss in K.E due to collision is

    A body of mass 2 kg is moving with velocity 10 m/s towards east, Another body of same mass and same velocity moving towards north collides with former and coalesces and moves towards north-east. Its velocity is

    A moving mass of 1 kg collides elastically with a stationary mass of 2 kg. If E be the initial K.E. of the moving mass, the kinetic energy left with it after the collision will be

    A particle of mass m moving towards the east with speed v collides with another particle of the same mass and same speed v moving towards north. If the two particles stick to each other, the new particle of mass 2 m will have a speed of

    A shell of mass m moving with velocity v suddenly breaks into two pieces. The part having mass m/4 remains stationary. The velocity of other part will be

    A neutron moving with a speed v collides head on with a stationary α -particle. The speed of the neutron after collision is

    A moving neutron collides with a stationary α -particle. The fraction of the kinetic energy lost by the neutron is

    A plate of mass M remains in equilibrium in air when a bullets are fired per second on it. The mass of each bullet is m and it strikes the Late with speed v. If the coefficient of restitution is e, then {M >> m)

    An object of 2.0 kg mass makes an elastic collision with another object of mass M at rest and continues to move in the original direction but with one-fourth of its original speed. What is the value of M ?

    Three identical blocks ,4, B and C are placed on horizontal friction less surface as shown in fig. (+). The blocks B and C are at rest. The block A is approaching towards B with a speed t0 m,/s. The coefficient of restitution for all collisions is 0 . 5. The speed of block C just after collision is

    A ball is dropped from a height h above a floor. If the coefficient of restitution between the floor and the ball is e, the ball after the first rebound will rise to a height of

    A mass of 10 g moving horizontally with a velocity of 100 cms – 1 strikes a pendulum bob of mass 10 g. Length of string is 50 cm. The two masses stick together. The maximum height reached by the system now is (Take, g = 10 ms – 2 )

    Conservation of momentum in a collision between particles can be understood from [NCERT Exemplar]

    A cannon ball is fired with a velocity 200 ms – 1 at an angle of 60° with the horizontal. At the highest point of its flight, it explodes into 3 equal fragments, one going vertically upwards with a velocity 100 ms – 1 , the second one falling vertically downwards with a velocity 100 ms – 1 . The third fragment will be moving with a velocity

    A body of mass a moving with velocity b strikes a body of mass c and gets embedded into it. The velocity of the system after collision is

    Two balls of equal mass have a head on collision with speed 4 ms – 1 each travelling in opposite directions. If the coefficient of restitution is 1/2, the speed of each ball after impact will be

    A particle of mass m moving with speed v hits elastically another stationary particle of mass 2m inside a smooth horizontal circular tube of mean radius r. The time after which the second collision will take place is

    A bullet of mass 20 g moving with 600 ms – 1 collides with a block of mass 4 kg hanging with the string of length 0.4 m. What is velocity of bullet when it comes out of block, if block rises to height 0.2 m after collision? (Take, g = 10 ms – 2 )

    In a gravity free space, a man of mass M standing at a height h above the floor, throws a ball of mass m straight down with a speed u. When the ball reaches the floor, the distance of the man above the floor will be

    A cricket ball of mass 150 g moving with a speed of 126 kmh – 1 hits at the middle of the bat, held firmly at its position by the batsman. The ball moves straight back to the bowler after hitting the bat. Assuming that collision between ball and bat is completely elastic and the two remain in contact for 0.001 s, the force that the batsman had to apply to hold the bat firmly at its place would be

    A metal ball falls from a height of 32m on a steel plate. If the coefficient of restitution is 0.5, to what height will the ball rise after second bounce?

    A particle of mass 1 kg is thrown vertically upward with speed 100 ms – 1 . After 5 s, it explodes into two parts. One part of mass 400 g emerges with speed 25 ms – 1 in downward direction, what is the velocity of other part just after explosion? (Take, g = 10 ms – 2 )

    A particle falls from a height h upon a fixed horizontal plane and rebounds. If e is the coefficient of restitution, the total distance travelled before rebounding has stopped is

    A man of mass M stands at one end of a plank of length L which lies at rest on a frictionless surface. The man walks to the other end of the plank. If the mass of the plank is M 3 , the distance that the man moves relative to the ground is

    A block A of mass M moving with speed u collides elastically with block B of mass m which is connected to block C of mass m with a spring. When the compression in spring is maximum, the velocity of block C with respect to block A is (Neglect the friction everywhere)

    A particle of mass m moving with velocity u makes an elastic one dimensional collision with a stationary particle of mass m They are in contact for a brief time T. Their force of interaction increases from zero to F 0 linearly in time T 2 and decreases linearly to zero in further time T 2 . The magnitude of F 0 is.

    Two identical blocks A and B, each of mass m resting on smooth floor are connected by a light spring of natural length L and spring constant k with the spring at its natural length. A third identical block C (mass m) moving with a speed v along the line joining A and B collides with A elastically , the maximum compression in the spring is

    Directions (Q. Nos. 1-6) These questions consist of two statements each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses Assertion : The relative velocity of the two particles in head on elastic collision is unchanged both in magnitude and direction. Reason : The relative velocity is unchanged in magnitude but gets reversed in direction.

    The bob A of a simple pendulum is released when the string makes an angle of 45° with the vertical. It hits another bob B of the same material and same mass kept at rest on a table. If the collision is elastic, which of the following statement is correct?

    Directions (Q. Nos. 1-6) These questions consist of two statements each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses Assertion : The relative velocity of the two particles in head on elastic collision is unchanged both in magnitude and direction. Reason : The relative velocity is unchanged in magnitude but gets reversed in direction.

    Directions (Q. Nos. 1-6) These questions consist of two statements each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses Assertion : The relative velocity of the two particles in head on elastic collision is unchanged both in magnitude and direction. Reason : The relative velocity is unchanged in magnitude but gets reversed in direction.

    Assertion : Two particles are moving in the same direction do not lose all their energy in completely inelastic collision. Reason : Principle of conservation of momentum holds true for all kinds of collisions. [AIIMS 2018]

    One object of mass 20 kg is moving with speed 10 ms – 1 in west direction and another object of mass 10 kg is moving with 15 ms – 1 in north direction. Both collide and stick together. Choose the correct alternative. [JIPMER 2019]

    I. Linear momentum of a system of particles is zero. II. Kinetic energy of a system of particles is zero. Which of the following statement(s) is/are correct?

    A block C of mass m is moving with velocity v 0 and collides elastically with block A of mass m and connected to another block B of mass 2m through spring of spring constant k. What is the value of k, if x 0 is compression of spring, when velocity of A and B is same? [JIPMER 2017]

    An object flying in air with velocity ( 20 i ^ + 25 j ^ – 12 k ^ ) suddenly breaks in two pieces whose masses are in the ratio 1: 5. The smaller mass flies off with a velocity ( 100 i ^ + 35 j ^ + 8 k ^ ) . The velocity of the larger piece will be

    In a one dimensional collision between two identical particles A and B, B is stationary and A has momentum p before impact. During impact, B gives an impulse J to A. Then, coefficient of restitution between the two is

    Two identical balls bearing in contact with each other and resting on a frictionless table are hit head on by another ball bearing the same mass moving initially with a speed v as shown in figure. If the collision is elastic, which of the following (figure) is a possible result after collision? [NCERT Exemplar]

    A ball falling freely from a height of 4.9 m ,hits a horizontal surface. If e = 3/4, then the ball will hit the surface second time after

    A bullet of mass m is fired into a block of wood of mass M which hangs on the end of pendulum and gets embedded into it. When the bullet strikes the wooden block, the pendulum starts to swing with maximum rise R. Then, the velocity of the bullet is given by

    A ball falls freely from a height of 45 m. When the ball is at a height of 25 m, it explodes into two equal pieces. One of them moves horizontally with a speed of 10 ms – 1 . The distance between the two pieces on the ground is

    A man of mass m moves with a constant speed on a plank of mass M and length I kept initially at rest on a frictionless horizontal surface from one end to the other in time t. The speed of the plank relative to ground while man is moving, is

    Three identical blocks A, B and C are placed on horizontal frictionless surface. The blocks B and C are at rest but A is approaching towards B with a speed 10 ms – 1 . The coefficient of restitution for all collisions is 0.5. The speed of the block C just after collision is approximately

    A pendulum consists of a wooden bob of mass m and length l. A bullet of mass m 1 is fired towards the pendulum with a speed v 1 and it emerges from the bob with speed v 1 3 . The bob just completes motion along a vertical circle. Then, v 1 is

    Body of mass M is much heavier than the other body of mass m The heavier body with speed v collides with the lighter body which was at rest initially elastically. The speed of lighter body after collision is [AIIMS 2018]

    Two spheres A and B of masses m 1 and m 2 respectively collide. A is at rest initially and B is moving with velocity v along X-axis. After collision, B has a velocity v/2 in a direction perpendicular to the original direction. The mass A moves after collision in the direction

    Two objects of mass m each moving with speed u ms – 1 collide at 90°, then final momentum is (assume collision is inelastic) [JIPMER 2019]

    In a two block system, an initial velocity v 0 with respect to ground is given to block A. Which of the following statement(s) is/are correct?

    I. In elastic collision, initial kinetic energy is equal to the final kinetic energy. II. In elastic collision, kinetic energy during the collision time At is constant. Which of the following statement{s) is/are correct?

    Two particles of masses m 1 and m 2 move with initial velocities u 1 and u 2 . On collision, one of the particles get excited to higher level, after absorbing energy ε . If final velocities of particles be v 1 and v 2 , then we must have [CBSE AIPMT 2015]

    A particle of mass 5m at rest suddenly breaks on its own into three fragments. Two fragments of mass m each move along mutually perpendicular directions each with speed v. The energy released during the process is [NEET (Odisha) 2019]

    Directions (Q. Nos. 1-6) These questions consist of two statements each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses Assertion : The relative velocity of the two particles in head on elastic collision is unchanged both in magnitude and direction. Reason : The relative velocity is unchanged in magnitude but gets reversed in direction.

    A ball of mass m moving with a horizontal velocity v strikes the bob of a pendulum at rest. Mass of the bob of the pendulum is also m. During this collision, the ball sticks with the bob of the pendulum. The height to which the combined mass rises will be (g = acceleration due to gravity)

    Directions (Q. Nos. 1-6) These questions consist of two statements each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses Assertion : The relative velocity of the two particles in head on elastic collision is unchanged both in magnitude and direction. Reason : The relative velocity is unchanged in magnitude but gets reversed in direction.

    A moving block having mass m, collides with another stationary block having mass 4m The lighter block comes to rest after collision. When the initial velocity of the lighter block is v, then the value of coefficient of restitution (e) will be’ [NEET 2018]

    A particle of mass m, kinetic energy K and momentum. p collides head on elastically with another particle of mass 2 m at rest. Match the following columns (after collision) and mark the correct option from the codes given below. Column I Column II (A) Momentum of first particle (p) 4p/3 (B) Momentum of second particle (q) K/9 (C) Kinetic energy of first particle (r) – p/3 (D) Kinetic energy of second particle (s) 8K/9 A B C D

    Assertion : There is no loss in energy in elastic collision. Reason : Linear momentum is conserved in elastic collision. [AIIMS 2019)

    A body of mass 5 × 10 3 kg moving with speed 2 ms – 1 collides with a stationary body of mass 15 × 10 3 kg inelastically and sticks to it. Then, loss in kinetic energy of the system will be [AIIMS 2019]

    I. Linear momentum of the system remains constant. II. Centre of mass of the system remains at rest. Which of the following statement(s) is/are correct?

    Body A of mass 4m moving with speed u collides with another body B of mass 2m at test. The collision is head on and elastic in nature. After the collision, the fraction of energy lost by the colliding body A is [NEET 2019]

    A block having mass m collides with an another stationary block having mass 2 m. The lighter block comes to rest after collision. If the velocity of first block is v, then the value of coefficient of restitution will must be [AIIMS 2015]

    A particle of mass m collides with another stationary particle of mass M. If the particle m stops just after collision, then the coefficient of restitution for collision is equal to

    A body from height h is dropped, if the coefficient of restitution is e, then calculate the height achieved after one bounce.

    A particle of mass m 1 moves with velocity v 1 and collides with another particle at rest of equal mass. The velocity of the second particle after the elastic collision is

    Chat on WhatsApp Call Infinity Learn

      Talk to our academic expert!



      +91


      Live ClassesBooksTest SeriesSelf Learning




      Verify OTP Code (required)

      I agree to the terms and conditions and privacy policy.