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

    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
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    #2

    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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