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    flufy87's Avatar
    flufy87 Posts: 3, Reputation: 1
    New Member

    Mar 7, 2011, 04:09 PM
    solid mechanics
    How long must a force F be applied to a mass M to change the velocity of the mass by 2 m/s if

    · F = 1471 N

    · M = 153 kg

    jcaron2's Avatar
    jcaron2 Posts: 986, Reputation: 204
    Senior Member

    Mar 7, 2011, 09:13 PM

    You know that F=ma.

    Therefore, you can easily calculate the acceleration.

    Once you know the acceleration, a, you just need to use


    where is the change in velocity and is the amount of time that passes. All you have to do is solve for .

    Can you do that?

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