Question

A body of mass m accelerates uniformly from rest to a speed v in time t. The average power delivered is

• A. $\frac{m{v}^2}{t}$
• B. $\frac{m{v}^2}{2t}$
• C. $\frac{2m{v}^2}{t}$
• D. None of these

Answer 1

The correct option is A $\frac{m{v}^2}{t}$

We can find the acceleration produced by the mass as given by$:$

$a=\frac{v}{t}$

hence$,$ the instantaneous value of power would be given by$:$

d$P=\frac{Mv}{t}\times v=\frac{M{v}^2}{t}$

Hence,

option $\left(A\right)$ is correct answer.