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A body is allowed to fall on the ground ...

A body is allowed to fall on the ground from a height `h_(1)`. If it is rebound to a height `h_(2)` then the coefficient of restitution is:

A

`(h_(2))/(h_(1))`

B

`sqrt((h_(2))/(h_(1)))`

C

`(h_(1))/(h_(2))`

D

`sqrt((h_(1))/(h_(2)))`

Text Solution

Verified by Experts

The correct Answer is:
A

`u_(1) = - sqrt(2 gh). V_(2) = sqrt(2 gh)`. Since `u_(2) = v_(2) = 0`
`e = (-v_(1))/(u_(1)) = sqrt((h_(2))/(h_(1)))`
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