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Q.

A lead ball strikes a wall and falls down. A tennis ball having the same mass and velocity strikes the same wall and bounces back. Which is the correct statement?

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a

The tennis ball suffers a greater change in momentum.

b

The lead ball suffers a greater change in momentum.

c

Both the balls suffers equal change in momentum.

d

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

answer is A.

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Detailed Solution

Change in momentum of the tennis ball = mu - (-mu) = 2muChange in momentum of the lead ball = mu - 0 = mu
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