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 seconds. The work done by all the forces acting on the body during the time interval `t = 2s` to `t = 4s` is

36 J

64 J

100 J

120 J

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