Rotational Motion Question 117

Question: A ball falls vertically onto a floor with momentum p , and then bounces repeatedly. If the coefficient of restitution is e , then the total momentum imparted by the ball on the floor till the ball comes to rest is

Options:

A)p(1+e)

B)p1e

C)p(1+1e)

D)p(1+e1e)

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Answer:

Correct Answer: D

Solution:

[d]

Δp=(p+ep)+(ep+e2p)+(e2p+ep3)+ =p(1+e)1+e+e^{2}+…=p(1+e)(1e)



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