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A stone of mass "m" initially at rest an...

A stone of mass "m" initially at rest and dropped from a height "h" strikes the surface of the earth with a velocity "v". If the gravitational force acting on the stone is `W`, then which of the following identities is correct ?

A

`mv - mh = 0`

B

`.^(1)//_(2) mv^(2) - Wh^(2) = 0`

C

`.^(1)//_(2) mv^(2) - Wh = 0`

D

`.^(1)//_(2) mv^(2) - mh = 0`

Text Solution

Verified by Experts

The correct Answer is:
C
gain in `K.E` = Loss of `P.E`
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