1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: 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


    User Avatar

    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!!
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook