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Homework Help: Finding Acceleration Given Coordinates

  1. Sep 15, 2012 #1


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    No idea how to do this.

    An object moving with uniform acceleration has a velocity of 11.0 cm/s in the positive x-direction when its x-coordinate is 2.91 cm. If its x-coordinate 2.75 s later is −5.00 cm, what is its acceleration?

    The answer is -10.1 cm/s squared but I don't know how to get to the answer. Any help would be great. Thanks.
  2. jcsd
  3. Sep 15, 2012 #2
    As you know velocity=Δdisplacement/Δtime.
    What do you know about constant acceleration definition?
  4. Sep 16, 2012 #3


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    Perhaps look at one of the SUVAT equation of motion.

    You know the displacement s, the time t and the initial velocity v.

    I'll let you decide which equation you need to solve for "a".
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