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A body of mass 6kg is under a force whic...

A body of mass `6kg` is under a force which causes displacement in it given by `S= (t^(2))/(4)` maters where `t` is time . The work done by the force in `2` sec is

A

`12J`

B

`9J`

C

`6J`

D

`3J`

Text Solution

Verified by Experts

The correct Answer is:
D
`W = (1)/(2)m v^(2)`, `v = (d s)/(d t)`
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