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A ball is dropped from height 5m. The ti...

A ball is dropped from height 5m. The time after which ball stops rebounding if coefficient of restitution between ball and ground `e=1//2`, is

A

1 sec

B

2 sec

C

3 sec

D

infinite

Text Solution

Verified by Experts

The correct Answer is:
C
`t=(u)/(g)properArrtsqrt((2h)/(g))[1+2(e+e^(2)+e^(3)+....oo)]=3s`
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