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Car impulse physics problem

  1. Mar 25, 2008 #1
    1. A car moving along a straight road starts to decrease its speed linearly with distance travelled, such that its speed drops from 50 m/s to a value which would approach zero after 100 m. What distance will have been travelled when the car`s acceleration is -10m/s^2 /. Answer is 60m , but how can i do the steps?
     
  2. jcsd
  3. Mar 26, 2008 #2

    tiny-tim

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    Hi madahmad1! :smile:

    You should tell us what have you tried, so that we know how to help you.

    Is there any part of this question you don't understand?
     
  4. Mar 26, 2008 #3
    ok, i got that time t=5 , by using dividing 50/10. Also, i got that the car accelerates at 12.5 m/s to cover 100m from at 50m/s to 0 m/s velocity. But i do not know what to do next? How can i get that the car covered a distance of 60 m during that time?
     
  5. Mar 26, 2008 #4

    tiny-tim

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    erm … no! :frown:
     
    Last edited by a moderator: Mar 26, 2008
  6. Mar 27, 2008 #5
    so is my work correct? what should i do?
     
  7. Mar 29, 2008 #6
    any help please?
     
  8. Mar 30, 2008 #7
    any ideas? any hints? i cannot figure out how the answer comes out to be 60 m
     
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