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Question

A body is moved in straight line by constant power of machine. What will be the relation between the travelling distance and time?

A
s2t3
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B
s2t5
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C
s3t2
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D
st3
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Solution

The correct option is A s2t3
Power of a moving object P=F.v
=ma.v
We know that s=12at2
a=2st2
Also v=at=2st
Thus , P=m.2st2.2st
s2t3

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