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Homework Help: Finding Time, given velocity and acceleration

  1. Feb 26, 2009 #1
    1. The problem statement, all variables and given/known data

    A bicyclist is finishing his repair of a flat tire when a friend rides by with a constant speed of 3.9 m/s. Two seconds later the bicyclist hops on his bike and accelerates at 2.0 m/s^{2} until he catches his friend.

    2. Relevant equations


    3. The attempt at a solution

    Well I could put the numbers in the equation but I know its wrong anyways. Not sure how to get this problem going.
    Last edited: Feb 26, 2009
  2. jcsd
  3. Feb 26, 2009 #2


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    Homework Helper

    You need distance formulas because the distance travelled is the same in both cases.
    Don't forget to account for the 2 second delay. You might want to put t in one formula and t-2 in the other.
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