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I need a simplification

  1. Feb 5, 2007 #1
    a runner runs half the remaining distance to the finish line every ten seconds. she runs in a straight line and doesn't ever reverse her direction. does her acceleration have a constant magnitude? give a reason for your answer


    i want just to know the situation
     
  2. jcsd
  3. Feb 5, 2007 #2
    Consider the parameters given. Take time intervals of ten seconds. Consider the distance travelled in the first ten seconds, the distance travelled in the next ten seconds, and so on. Then consider how her speed changes. That's your answer.
     
  4. Feb 5, 2007 #3
    thanks a lot
     
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