A body of mass $m$ is accelerated uniformly from rest to a speed $v$ in a time $T$. The instantaneou

Question

A body of mass $m$ is accelerated uniformly from rest to a speed $v$ in a time $T$. The instantaneous power delivered to the body as a function of time is given by\

Professor PC Thomas Classes · Answer

(c) : Power $=$ Force $	imes$ velocity $=(m a)$ $(v)=(m a)(a t)=m a^{2} t$\ or Power $=m\left(\frac{v}{T}ight)^{2}(t)=\frac{m v^{2}}{T^{2}} t$\