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A variable force F acts on a body which ...

A variable force `F` acts on a body which is free to move. The displacement of the body is proportional to `t^(3)`, where `t` = time. The power delivered by `F` to the body will be proportional to

A

t

B

`t^(2)`

C

`t^(3)`

D

`t^(4)`

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The correct Answer is:
C
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