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Question: Answered & Verified by Expert
If a force $F$ is applied on a body and it moves with a velocity $v$, the power will be
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Options:
  • A $F \times v$
  • B $F / v$
  • C $F / v^2$
  • D $F \times v^2$
Solution:
1588 Upvotes Verified Answer
The correct answer is: $F \times v$
Given, Velocity $=\mathrm{v}$ force $=\mathrm{F}$
We know that work done is equal to the product of force and displacement
$W=f \times x$
Divided by $t$ in both sides then we get,
$\frac{w}{t}=\frac{f x}{t} \Rightarrow \frac{x}{t}=v ~\&~ \frac{w}{t}=p$
Therefore $\mathrm{p}=\mathrm{fv}$

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