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A ball of mass m moves with speed v and strikes a wall having infinite mass and it returns with same speed then the work done by the ball on the wall is

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$\frac{m}{v} J$

mv J

Zero

$\frac{v}{m} J$

answer is A.

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Detailed Solution

The ball rebounds with the same speed. So change in it's Kinetic energy will be zero i.e. work done by the ball on the wall is zero

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