Questions
A ball hits the floor and rebounds after inelastic collision. In this case
a
the momentum of the ball just after the collision is the same as that just before the collision
b
the mechanical energy of the ball remains the same in the collision
c
the total momentum of the ball and the earth is conserved
d
the total energy of the ball and the earth is conserved
detailed solution
Correct option is C
Here we consider the ball and earth as one system. Since no external forces act during collision (the gravitational force is an internal force only), the total momentum is conserved.Talk to our academic expert!
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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
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