Q.

A metal ball falls from a height of 32m on a steel plate. If the coefficient of restitution is 0.5, to what height will the ball rise after second bounce?

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a

2 m

b

4 m

c

8 m

d

16 m

answer is A.

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Detailed Solution

hn=he2n=32124=3216=2 m  (here, n = 2, e = 1/2)
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