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A particle is moving with a velocity of 60.0 m/s

  1. May 30, 2010 #1
    A particle is moving with a velocity of 60.0 m/s in positive x direction at t= 0 and t = 15.0 s the velcity decreases uniformly to zero . What was the acceleration during this 15.0-s interval ? what is the significance of the sign of your answer ?





    my answer is



    Vo = 0

    a = 60 - 0 / 15 = 4
     
  2. jcsd
  3. May 30, 2010 #2

    tiny-tim

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    Hi r-soy! :smile:

    You must get into the habit of writing the formula clearly on one line, then filling in the numbers on the next line …

    if you'd done that, you wouldn't have got the wrong answer! :redface:

    So try again, and start with the full formula. :smile:
     
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