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Homework Help: The Shot of a Rifle

  1. Jan 20, 2006 #1
    A 5.0 g bullet leaves the muzzle of a rifle with a speed of 320 m/s, What force (assumed constant) is exerted on the bullet while it is traveling down the .82 m long barrel of the rifle?

    This is what I have so far. : [.



    a= 62439


    The back of the book is 310. What did I do wrong?
  2. jcsd
  3. Jan 20, 2006 #2
    I got what you got.
  4. Jan 20, 2006 #3
    probably because the book gives answers in significant figures?
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