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13 November, 00:37

How much power is needed to lift a book to a height of 2.0 meters in a time of 1.0 second, if the book exerts a force of 20 Newtons?

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  1. 13 November, 03:41
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    Answer: P = 40 W

    Explanation: Power is defined as the amount of work per unit time or expressed in the formula of P = W / t

    Work is the product of force and distance so W = Fd.

    So the working equation will be:

    P = Fd / t

    = 20 N (2.0 m) / 1 s

    = 40 W

    Is the amount of power exerted.
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