A force `(3 hat(i)+4 hat(j))` acts on a body and displaces it by `(3 hat(i)+4 hat(j))m`. The work done by the force is

Correct Answer - D
Given, force `F=(3hat(i)+4hat(j))N`
Displacement `=(3hat(i)+4hat(j))m`
Work donw, `W=F.s`
`=(3 hat(i)+4hat(j)).(3hat(i)+4hat(j))`
`=9+16`
`W=25 J`

A force `(3 hat(i)+4 hat(j))` acts on a body and displaces it by `(3 hat(i)+4 hat(j))m`. The work done by the force is

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