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Quick Acceleration question

  1. Aug 26, 2004 #1
    I can't figure this problem out. Any help is greatly appreciated!

    At a sports car rally, a car starting from rest accelerates uniformly at a rate of 9.0 m/s2 over a straight-line distance of 100m. The time to beat in this event is 4.5 s. Does the driver do it? If not, what must be the acceleration be to do so?

    Thanks very much.
     
  2. jcsd
  3. Aug 26, 2004 #2

    Doc Al

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    Staff: Mentor

    Welcome to PF!

    Why don't you start by telling us what you know about accelerated motion. What have you done so far on the problem?
     
  4. Aug 26, 2004 #3
    have you learned the kinematic equations?
     
  5. Aug 26, 2004 #4
    X=(1/2)at^2
    .......................use that equation (thats t squared)

    X=distance
    a= the accel.
    t=time

    I'd tell u the answer but whats the fun of not learning anything ;).......to see if he beats it see if he crosses the finish line (100m) in 4.5s with that accel.......if he doesn't solve for a.
     
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