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30 January, 15:09

A force of 6.0 newtons changes the momentum of a moving object by 3.0 kilogram•meters per second. how long did the force act on the mass

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  1. 30 January, 15:11
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    Given:

    force F=6.0 N

    momentum of object = 3.0 KGM/S

    solution:

    forces cause changes in the momentum of an object

    newton's second law tells us:

    F=ma = Î" (mv) / Î"t

    so, Î"t=Î" (mv) / F

    =3kgm/s/6N = 0.5 s

    answer: the force act on the mass for 0.5 S
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