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Getting the average velocity from a parabolic curve

  1. Sep 18, 2008 #1
    1. The problem statement, all variables and given/known data

    A ball accelerates steadily down a ramp, starting from rest. It goes 2m in 4s.
    What is the average velocity?

    3. The attempt at a solution
    Well, i didnt attempt it because i didnt get it
    i am thinking there is a typo and it is actually asking for the average acceleration, which i know how to do

    here it is:

    v1=0m/s
    v2=x
    d=2m
    a=0.5m/s2
    t=4s

    so here is what i have

    Aav= (P2-P1)/(t)
    = (0-x)/(4)

    now, i cannot go any furthur...
     
    Last edited: Sep 18, 2008
  2. jcsd
  3. Sep 18, 2008 #2

    Dick

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    Science Advisor
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    It's asking for average velocity. Average velocity is total displacement over total time. It's not that hard.
     
  4. Sep 18, 2008 #3
    i know that but the graph has a parabolic curve
    so how do you derive the average velocity of a moving object from a parabolic curve?
     
  5. Sep 18, 2008 #4

    Dick

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    Science Advisor
    Homework Helper

    Look up the definition of average velocity. Does the shape of the curve matter?
     
  6. Sep 18, 2008 #5
    nvm
    i was mistaken
    sorry 4 the problem
    :P
     
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