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Q.

A body of mass m accelerates uniformly from rest to v1 in time t1. As a function of time t, the instantaneous power delivered to the body is

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a

mv1tt1

b

mv12tt1

c

mv1t2t1

d

mv12tt12

answer is D.

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Detailed Solution

P=F→.v→=ma×at=ma2t    [as u = 0]=mv1t12t=mv12tt12      As  a=v1​/t1
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