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Homework Help: What average net force is required to stop .

  1. Jan 28, 2010 #1
    What average net force is required to stop.....

    1. a 1500 kg vehicle is travelling at 75km/h. what is the average net force required to stop the vehicle within a 4.0 second interval?



    2. f=ma? but i dont know acceleration?



    3. force = 1500x (75/4) ??????
     
  2. jcsd
  3. Jan 28, 2010 #2

    hage567

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    Homework Helper

    Re: What average net force is required to stop.....

    You can find the acceleration with the information they give you in the problem. Look up the definition of acceleration. Also remember to make sure your units are consistent throughout your calculations.
     
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