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16 April, 17:27

A construction foreman exerts 1300 Newtons of force trying to move a 1200-kg block of concrete. How many Joules of work does he perform?

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  1. 16 April, 18:45
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    He does no work until the block starts to move ... an unlikely event.

    If it ever does move, then the work he does is

    (1300) x (the distance the block moves, in meters).

    The unit is 'joules.
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