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Help with an acceleration graph problem.

  1. Sep 7, 2004 #1
    I cant for the life of me figure this out. The question is, based on this graph, determine the total distance the particle traveled during the first 20 seconds.

    http://seminario.no-ip.com/graph.gif

    I graphed the velocity graph just fine based on the acceleration graph. but the position graph is a little trickier. Can anyone help me out?
     
    Last edited: Sep 7, 2004
  2. jcsd
  3. Sep 7, 2004 #2

    Doc Al

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    Staff: Mentor

    I assume you are given the initial velocity? The motion is three periods of constant acceleration: 0 to 10 seconds, 10 to 15 seconds, and 15 to 20 seconds. Do it step by step, one period at a time.
     
  4. Sep 7, 2004 #3
    thanks Doc Al. I did this, dividing the three regions of the velocity graph and calculated the area beneath each of those regions. I came up with 215 meters but the online assignment checker counted it as wrong so I am a little confused.
     
  5. Sep 7, 2004 #4
    what's the initial velocity?
     
  6. Sep 7, 2004 #5

    Doc Al

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    Staff: Mentor

    Two things to do. (1) If you are familiar with the kinematic equations (such as [itex]x = x_0 + v_0 t + 1/2 a t^2[/itex]) you can just calculate the distance as a double check of your work. (2) You can show us your velocity graph and we can take a look at how you solved this.
     
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