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    24115's Avatar
    24115 Posts: 1, Reputation: 1
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    #1

    Dec 8, 2009, 03:03 PM
    physics help solving problems
    what is the velocity of a block after 10 seconds if force applied=15 newtons, force of friction= 5 newtons and mass= 12 kilograms?
    InfoJunkie4Life's Avatar
    InfoJunkie4Life Posts: 1,409, Reputation: 81
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    #2

    Dec 8, 2009, 03:45 PM

    : Acceleration equals force divided by mass.

    : Velocity equals acceleration times time.

    Force is measured in newtons, time in seconds, mass in kilograms.

    If you have an object that is accelerating and there is friction, the friction acts like negative acceleration. For every 15 newtons you have 5 newtons pushing backwards against it. Thus you have a total acceleration of 10 newtons.


    Any more questions, just post back.
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