A ball is rolled along a floor toward a wall. It bounces off the wall with a...
A ball is rolled along a floor toward a wall. It bounces off the wall with a velocity that has the same magnitude as its initial velocity magnitude, in a direction back toward where the ball had come from. Did the momentum of the ball change during this process? Explain why or why not.
Homework Answers
During this collision the momentum has been changed because initially direction of velocity is towards the wall while after the collision direction of velocity is opposite to the direction of wall thus if we take the mass of the body m and velocity v then the initial momentum = mv
But the final momentum is equal to= - mv thus the change in momentum = mv-(-mv) = 2 mv
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