A body falls from height 20m. If co-efficient of restitution is(1)/(2),what is the time interval between starting pointand second bounce ? [g = 10 ms ^(-2)]

A body falls from height 20m. If co-efficient of restitution is(1)/(2)

1.	A body falls from height 20m. If co-efficient of restitution is(1)/(2),what is the time interval between starting pointand second bounce ? [g = 10 ms ^(-2)]
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