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A block of mass 20 kg is moving in x-dir...

A block of mass 20 kg is moving in x-direction with a constant speed of 10 `ms^(-1)`. It is subjected to a retarding force `F=(-0.1x)N` during its travel from x=20 m to x=30 m. Its final kinetic energy will be

A

475 J

B

450 J

C

275 J

D

250 J

Text Solution

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The correct Answer is:
A
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