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From classical mechanics to quantum field theory, momentum is the Universe's preferred language to describe motion. Learn here about momentum, its conservation, and how it captures our intuitions.

If a car and a bus are moving with the same momentum, which has greater kinetic energy?

**Assumptions and Details**

- The car has a much smaller mass than the bus.

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When the two objects collide, they apply large forces to each other. These forces are called as impulsive forces. Such forces act for a very small duration of time, but still produce large changes in the momentum of the colliding objects.

Let's consider a case of collision between a ball and a bat. The ball of mass \(m\) is coming towards the batsman with a speed of \(v\) m/s and the bat hits the ball to return it with the same speed, along the same line. What will be the impulse of the force of the bat, on the ball?

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