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Homework Help: Question Regarding Velocity-Time Graphs

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

    The figure below shows the velocity-time graph of a train that starts from the origin at t = 0s


    a) Draw a position-time graph and an acceleration-time graph for the train

    b) Find the acceleration of the train at t = 3.0 s

    2. Relevant equations

    a = Vf - Vi / t

    x = 1/2 at^2 + Vi x t + Xi

    3. The attempt at a solution

    a) xfq3w6.jpg

    b) 1 m/s^2

    Do my answers look right? If not, what did I do wrong?
  2. jcsd
  3. Oct 2, 2012 #2


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    Homework Helper

    The acceleration is correct, and the graph of x(t) is almost correct, only the part between 0 and 4 s does not look parabolic, and check x at t=2 s.

  4. Oct 2, 2012 #3
    Looks right to me. But those are really, really, truly, bad graphs.
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