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Simple force question

  1. Nov 13, 2005 #1
    hi this is my first year in physics and i am already confused on it. I really need help on the following question: "The force of -9000 N is used to stop a 1500 kg car traveling at 30 m/s. What is the breaking distance is needed to bring the car to a halt?" I have no idea which formula to use or where to begin since i don't have the time or acceleration. Please help me. Thanks!
  2. jcsd
  3. Nov 13, 2005 #2
    You have a force and a mass, you can find teh acceleration using newton's 2nd law.
  4. Nov 13, 2005 #3


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    you already have "v", once you find "a" you can use one of those kinematic equations to find "d".
  5. Nov 13, 2005 #4
    Thanks A Bunch!!
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