A ball of mass m travelling horiozntally with velocity v strikes a massive vertical wall and rebounds back along its original direction with no change in speed. What is the magnitude of the impulse delivered by the wall to the ball?

A ball of mass m travelling horiozntally with velocity v strikes a mas

1.	A ball of mass m travelling horiozntally with velocity v strikes a massive vertical wall and rebounds back along its original direction with no change in speed. What is the magnitude of the impulse delivered by the wall to the ball?
Answer» 0 `(1)/(2)mv` mv 2mv Solution :The impulse delivered to the ball is equal to its CHANGE in momentum. The momentum of the ball was mv before hitting the wall and m(-V) after. Therefore, the change in momentum is m(-v)-mv=-2mv, so the MAGNITUDE of the momentum change (and the impulse) is 2mv.

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A ball of mass m travelling horiozntally with velocity v strikes a massive vertical wall and rebounds back along its original direction with no change in speed. What is the magnitude of the impulse delivered by the wall to the ball?

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