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Distance traveled for current velocity and constant acceleration as known variables

  1. Jun 3, 2012 #1
    1. The problem statement, all variables and given/known data

    Suppose an object has a velocity [itex]v[/itex] and an acceleration of [itex]a[/itex], where [itex]a[/itex] is negative. The object will eventually reach a velocity of zero [itex]v = 0[/itex]. How much distance will the object travel until [itex]v = 0[/itex]?

    2. Relevant equations

    v = u + at
    s = 0.5(u+v)t
    s = ut + 0.5 at2
    v2 - u2 = 2as

    3. The attempt at a solution

    Since v2 - u2 = 2as, s = -u2/2a. I implemented this formula into a program I am using, but the object did not stop at the given distance. Am I doing something obviously wrong here? Any help would be greatly appreciated.
     
  2. jcsd
  3. Jun 3, 2012 #2
    Re: Distance traveled for current velocity and constant acceleration as known variabl

    Well, using equation 1, set v = 0 and solve for t. Then plug that value into equation 3.
     
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