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The displacement of a body of mass 2 kg ...

The displacement of a body of mass 2 kg varies with time.t. as `S =t^(2) + 2t`, where S is in metres and .t.is in seconds. The work done by all the foces acting on the body during the time interval t = 2s to t = 4s is

A

36 J

B

64 J

C

100 J

D

120 J

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The correct Answer is:
B
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