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Q.

A tennis ball is thrown to a height  h above the ground. If the coefficient of restitution is e, what height will the ball achieve after the third collision?

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a

he2

b

he6

c

he3

d

he9

answer is A.

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Detailed Solution

hn=e2n×h         ⇒h3=e6h

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A tennis ball is thrown to a height  h above the ground. If the coefficient of restitution is e, what height will the ball achieve after the third collision?