Question

Ifa force 'F' is applied on a body and it moves with velocity 'U' then its power will be:
(a) FxV
(b) F/v2
(c) f/v
(d) FxV2​

Answer 1

Answer:

f.v

Explanation:

Power = Work/ Time.

Work = Force x displacement

So, now Power = Force x displacement / Time.

But displacement / Time = velocity

According to the question, Force is F and V is velocity so,

Power = F x v

But power is a scalar quantity so, we have dot product for power so......

Power = Fv or F.v

Ihope this helps

Answer 2

Answer:

Explanation:

power= work done / time taken

        = F ×S/ t .      ( work done= force ×displacement)

        = F×v. ( displacement/ time= velocity)

option (a)