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Homework Help: Conservation of Energy

  1. Feb 19, 2008 #1
    1. The problem statement, all variables and given/known data
    A passenger car has a speed of 16.8 m/s when it reaches point A. The average frictional force between the car and the track from point A to B is 250N. At point B in addition to this frictional force, the car's breaks are applied so that the passenger car stops at point B.

    Question: What additional force that must be applied by the breaks between point A and B in order to stop the car at point B?

    2. Relevant equations


    3. The attempt at a solution

    EK is all I know.
  2. jcsd
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