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Homework Help: Conservation of Momentum - Elastic Collision

  1. Apr 12, 2012 #1
    1. The problem statement, all variables and given/known data
    A curling stone with a mass of 20kg slides across the ice at 1.5m/s. It collides head on with a stationary 0.16kg hockey puck. After the collision, the puck's speed is 2.5m/s. Assume the motion occurs in the horizontal direction. What is the stone's final velocity? Follow the steps below to answer the question.

    2. Relevant equations

    3. The attempt at a solution
    mstonevixstone + mpuckvixpuck = mstonevfxstone + mpuckvfxpuck

    20*1.5 + .16*0 = 20vfxstone + .16*2.5
    vfxstone = 1.48 m/s
  2. jcsd
  3. Apr 12, 2012 #2


    User Avatar

    Looks okay to me. What's your question?
  4. Apr 14, 2012 #3
    Haha. Well if it's correct, I suppose I have none. Thanks!
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