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Average Velocities

  1. Sep 21, 2010 #1
    I have a question about average velocity. It's defined as the net displacement divided by the time. So if I have an object moving at a constant speed on a circular path, is the average velocity zero every time the object returns to the starting point? My reasoning is that the net displacement is zero.
     
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  3. Sep 21, 2010 #2

    PhanthomJay

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    Your reasoning is correct!
     
  4. Sep 21, 2010 #3
    Yes thats right. The average velocity is zero. But the average speed is not.
     
  5. Sep 21, 2010 #4
    Ok, that's what I thought. My professor worked out a problem where the object returned to the starting point, and claimed a value for the average velocity. I think she meant average speed and left me confused. :confused:
     
  6. Sep 21, 2010 #5
    Well yes, that is a common mistake ;)
     
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