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March 30, 2017

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A 5.0 N force directed to the west acts on an object for 2.0 seconds. What is the change in momentum of the object?


Do I have to divide 5.0 by 2.0 in order to get the momentum or multiply?

  • physics - ,

    No
    if it acted for one second, the answer would be 5 N m West
    for two seconds it is TWICE, not half.

  • physics - ,

    F = rate of change of momentum
    F = change in momentum / change in time

    change of momentum = F * change in time

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