Force acting on a particle moving in a straight line varies with velocity of particle as F = f

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5.Work, Energy, Power and Collision

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Force acting on a particle moving in a straight line varies with the velocity of the particle as $F = \frac{K}{\upsilon }$ where $K$ is a constant. The work done by this force in time $t$ is

A

$\frac{K}{{{\upsilon ^2}}}t$

B

$2Kt$

C

$Kt$

D

$\frac{{2Kt}}{{{\upsilon ^2}}}$

Solution

Power $P=F v=\frac{K}{v} \cdot v=K=\text { constant }$

$W=P t=K t$

Standard 11

Physics

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