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Homework Help: Rate of Deceleration & Time Required

  1. Sep 12, 2013 #1
    1. The problem statement, all variables and given/known data

    A truck traveling at 40.0 m/s decelerates uniformly to 20.0 m/s over a distance of 100 m. Determine the rate of deceleration and the time required for the truck to travel the 100 m.

    2. Relevant equations

    Deceleration=(original velocity-final velocity)/Time

    3. The attempt at a solution
  2. jcsd
  3. Sep 13, 2013 #2
    Rather try and use
    s=ut + [itex]\frac{1}{2}[/itex]at2
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