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Question

A lead ball strikes a wall and falls down but a tennis ball having the same mass and velocity striking the wall, bounces back. Check the correct statement.


A

The momentum of the lead ball is greater than that of the tennis ball

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B

The lead ball suffers a greater change in momentum compared with the tennis ball

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C

The tennis ball suffers a greater change in momentum as compared with the lead ball

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D

Both suffer an equal change in momentum

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Solution

The correct option is C

The tennis ball suffers a greater change in momentum as compared with the lead ball


Change in the momentum = Final momentum – Initial momentum

For lead ball ΔPlead=mv^i

ΔPlead=mv

For tennis ball ΔPtennis=mvmv=2mv^i

i.e. Tennis ball suffers a greater change in momentum


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