Q.

A body is initially at rest. It undergoes one dimensional motion with constant acceleration. The power delivered to it in time t is proportional to

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a

t12

b

t

c

t32

d

t2

answer is B.

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Detailed Solution

if force is constant  mdvdt= k constant on intregation mv=kt   v∞t power = F xv =F x kt m   power ∞ t
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A body is initially at rest. It undergoes one dimensional motion with constant acceleration. The power delivered to it in time t is proportional to