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Homework Help: Displacement Question

  1. Mar 24, 2010 #1
    1. The problem statement, all variables and given/known data
    A cyclist is travelling with a speed of 11.0 m/s when she applies the brakes. After slowing for 2.5s, her speed has been reduced to 3.0 m/s. If she continues braking, how much longer will it take her to stop?

    I found the deceleration to be -3.2 m/s^2
    V1 = 3.0 m/s
    V2 = 0

    2. The attempt at a solution

    I used the equation V2 = V1 + (a)(t) and got the change in time to be 0.9375s

    Does this seem like the correct way to solve this?
  2. jcsd
  3. Mar 24, 2010 #2


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    Homework Helper

    Well you found her deceleration correctly, so now what you want to get is the time it takes the cyclist to go from 11 m/s to 0 m/s.
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