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A plastic ball falling from a height 4.9...

A plastic ball falling from a height `4.9 m` rebounds number of times. If total time for second collision is `2.4 sec`, then coefficient of restitution is

A

`0.3`

B

`0.4`

C

`0.7`

D

`0.6`

Text Solution

Verified by Experts

The correct Answer is:
C
`T=t+2t_(1) = sqrt((2h)/(g))[1+2e]` since `t_(n)=e^(n)' t`.
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