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
${{m{v^2}} \over {{T^2}}}.{t^2}$
${{m{v^2}} \over {{T^2}}}.t$
${1 \over 2}{{m{v^2}} \over {{T^2}}}.{t^2}$
${1 \over 2}{{m{v^2}} \over {{T^2}}}.t$
Solution
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