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3 June, 13:24

A constant force of 40N acting on a body initially at rest gives it an acceleration of 0.1m/s inverse 2 for 4s. calculate the work-done by the force

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  1. 3 June, 16:56
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    Correct Answer: Option C

    Explanation

    X = ut + 12at2

    = (0 x 4) + (12 x 0.1 x 4 x 4)

    = 0.8m

    workdone = force x distance

    = 40 x 0.8

    = 32J
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