First slide

Collisions

Question

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

Moderate

A

2 m
B

4 m
C

8 m
D

16 m

Solution

$h_{n} = {he}^{2 n} = 32 {(\frac{1}{2})}^{4} = \frac{32}{16} = 2 m$ (here n = 2, e = 1/2)

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