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Homework Help: Me FRICTION

  1. Jan 29, 2006 #1
    plz help me FRICTION

    A 8.1g bullet leaves the muzzle of a rifle with a speed of 605.8m/s. What constant force is exerted on the bullet while it is traveling down the0.5m lengthof the barrel of the rifle? answer in N.

    Thanks in advance!
     
  2. jcsd
  3. Jan 29, 2006 #2
    sry for the double post
    i forgot to say that i am completely lost and have no idea where to start
     
  4. Jan 29, 2006 #3
    Here is what you will do:

    A. Write down what the question is asking

    B. Write down what are the knowns

    C. Write down what are the unknowns

    D. Write down which method you will try to use to solve this (Energy, kinematic?, and why)

    E. Write down the equations you have based on the method chosen from part D.

    F. Try to manipulate the equations to get a solution

    G. Check your solution to see if it seems too big or small to be reasonable


    THEN, someone will help you.
     
    Last edited: Jan 29, 2006
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