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Homework Help: How to find the average accleration on a velocity time graph

  1. Sep 7, 2013 #1
    My physics problem ask me to find the average acceleration on a velocity time graph. On the graph, velocity is at -6 constantly from 0 - 5 s.

    I know that an question to use would be average accerlation = delta v/ delta t

    The problem is I did that and I still got it incorrect on quest! I did -6 over 5s - 0s
    The answer I got was -1.2 please help to tell me what I'm doing wrong and what equation I should be using! Thanks so much!
  2. jcsd
  3. Sep 7, 2013 #2

    Andrew Mason

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    If the velocity was -6 during that whole period, is there any change in velocity? So what is Δv? (hint: think of acceleration as the slope of a velocity-time graph).

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