A body falls freely under gravity. Its s...

A body falls freely under gravity. Its speed is v when it has lost an amount U of the gravitational energy. Then its mass is

A

`(Ug)/(v^2)`

B

`(U^2)/(g)`

C

`(2U)/(v^2)`

D

`2Ugv^2`

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The correct Answer is:

C

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