BlogNCERTImportant Topic of Physics: Momentum

Important Topic of Physics: Momentum

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    Momentum is a vector quantity that represents an object’s proclivity to move. It is derived by the object’s mass multiplied by its velocity. If neither item is subjected to any external forces, their total momentum before and after the contact will be the same. The conservation of momentum is the name given to this relationship underneath the basic law of physics. The occurrence of crashes and explosions can be explained using this fundamental physics equation. The momentum formula is as follows:Momentum = mass (m) x velocity (v)Conservation of momentum can be defined through P1 (before) + P 2 (before) = P 1 (after) + P 2 (after) This calculation is effective for the object that endures collision

    Momentum is a physics word that refers to the amount of motion possessed by an item. The momentum belongs to a sports team that would be on the rise. The name “momentum” denotes “mass in motion.” Because all objects have mass, if they are moving, they have momentum – their mass is moving. In athletics, the term “momentum” is frequently used. A team with momentum is on the march, and stopping them will take some work. A team with a lot of momentum is on the march and will be difficult to stop. Momentum is a physics term that represents the amount of motion held by an item.

    A Brief outline

    The expression “energy” alludes to “mass moving.” Because all items have mass, assuming they are moving, they have force – their mass is moving. How much energy that an item is not set in stone by two factors: how much material is moving and the speed at which it is voyaging. The variables mass and speed impact force. The energy of an article is equivalent to the mass times the speed of the item as far as a situation.

    Mass multiplied by velocity equals momentum. (Momentum = mass * velocity)

    In physics, the sign for the quantity momentum is the lower-case p. Thus, p = m • v can be written as p = m • v, where m denotes mass and v denotes velocity. The equation shows that momentum is proportional to both the mass and the velocity of an item.

    Mass units multiplied by velocity units would be the units for momentum. The kg•m/s is the standard unit of momentum. While the kg•m/s is the official metric unit of momentum, there seem to be a number of additional units that are acceptable (but not standard). kg•mi/hr, kg•km/hr, and g•cm/s are other examples. A mass unit is combined with a velocity unit to produce a momentum unit in each of these cases. It’s in accordance with the momentum equation.

    Important concepts

    The Quantity of Momentum as a Vector

    The term “momentum” refers to a vector quantity. A vector quantity is one that is fully characterized by both magnitude and direction, as discussed in a previous unit. You must include information about both the size and direction of a 5-kg bowling ball heading westward at 2 m/s to fully describe the momentum of the bowling ball. It is not sufficient to state that the ball has a momentum of 10 kg•m/s; the ball’s momentum cannot be properly explained unless information regarding its direction is provided.

    The direction of the momentum vector coincides with the direction of the ball’s velocity. The direction of the velocity vector is like the direction in which an object is moving, as stated in a preceding unit. If the travelling ball is moving westward, its momentum can be precisely considered as 10 kg•m/s, west side. The amount and direction of an object’s momentum are fully defined as vector quantities.

    The Momentum Equation as a Thinking Tool

    It is clear from the definition of momentum that an object has a significant momentum if its mass and velocity are both large. In evaluating a material’s momentum, both factors are important. Consider a Mack truck and a roller skate both speeding down the street. The Mack truck has a significantly higher momentum due to its significantly bigger mass. However, if the Mack truck were to stop, the least big roller skate would have the most momentum. Any object that is resting will have no momentum. At rest, objects do not have momentum; they have no “mass in motion.” Both factors – mass – are important.

    The momentum equation can help us understand how a change in one of the two variables affects an object’s momentum. Consider a 0.5-kg physics cart travelling at 2.0 m/s and loaded with one 0.5-kg brick. The laden cart has a total mass of 1.0 kg and a momentum of 2.0 kg•m/s. If the cart was loaded with three 0.5-kg bricks, the total mass and momentum of the loaded cart would be 2.0 kg and 4.0 kg•m/s, respectively. When the mass is doubled, the momentum is also doubled.

    In space, momentum

    The majority of people are acquainted with astronauts working in space. They appear to be able to push freely floating items around with ease. Because the astronauts as well as the objects they are dealing with are in free fall, they are not affected by gravity. Heavy moving objects, on the other hand, retain the same momentum as they do on Earth, and changing this momentum can be just as difficult.

    Significance of Momentum in NEET exam

    In physics, momentum is used to determine the connection between speed, mass, and direction. It also refers to the force required to bring items to a halt and keep them moving. If an object has enough momentum, it can exert a significant amount of force. It can also forecast how fast and which way objects would move after colliding. The NEET practice for crucial momentum question PDF includes all of the important elements in the topic momentum with simple explanations and detailed visuals. All numerical type problems, multiple-choice questions (MCQs), long and short type solutions from Physics have been included in the momentum critical questions PDF. It also included all of the questions from the previous year’s examinations.

    Also read: Inertia

    FAQs (Frequently asked questions)

    Question 1: What factors have an impact on momentum?

    Answer: The degree of momentum an object has is determined by two factors:

    • The mass of an object determines its momentum.
    • It is determined by the object’s velocity.

    Question 2: What is the best way to gain traction?

    Answer: There are two laws for increasing momentum:

    • Raising the mass of the object.
    • By increasing the object’s velocity.

    Question 3: What exactly is momentum conservation?

    Answer: When no external force acts on an isolated system, its total momentum remains constant. As a result, the resulting force acting on the system is 0 if the total linear momentum is kept static. In the absence of an external torque, angular momentum is conserved as well.

     

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