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Shakara Richard
Lv 4
Shakara Richard asked in Education & ReferenceHomework Help · 7 years ago

homework question for physical sciences?

A man pushes a 50N box across a level floor at a constant speed of 2.0 m/s for 10 s. Find the average power output by the man. (10points)

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  • ?
    Lv 7
    7 years ago

    A man pushes a 50N box across a level floor at a constant speed of 2.0 m/s for 10 s. Find the average power output by the man.

    50 N is weight of the box .... but you need the actual force pushing the box. Without that the work done is zero and the power is zero.

    If you mean a 50 N force is used to push the box ...

    W = Fd = 50(2m/s)(10s) = 1000 j

    P = W / t = 1000 / 10 = 100 watts

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