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What is the magnitude of the average acceleration?

  1. Dec 1, 2009 #1
    a rock is rolled in the sand and it starts at 5 meters/second, it moves in a straight line for a distance of 3 meters and then stops....what is the magnitude of the average acceleration.??

    my attempt at this was to simply divide 5 by 3 giving me 1.6 m/s

    is this correct ?
  2. jcsd
  3. Dec 1, 2009 #2


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    Homework Helper

    Re: acceleration

    What are the units if you divide 5 m/s by 3 m?

    To get you started, search your kinematics equations. Do you see one relating distance travelled, acceleration, and speed?
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