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Homework Help: Simple Momentum Question

  1. Sep 22, 2009 #1
    1. The problem statement, all variables and given/known data
    A ball moves in the direction of the arrow labeled a below. The ball is struck by a stick which briefly exerts a force on the ball in the direction of the arrow labeled c below.

    http://img195.imageshack.us/img195/7387/directionrosette.jpg [Broken]

    2. Relevant equations

    Change in Monetum = Final Momentum - Initial Momentum

    3. The attempt at a solution

    Don`t you just place the vectors tail to tail and subtract them? If I place vector a tail to tail with c and subtract I get d (tail of vector is at initial and head of vector is at final)
    Last edited by a moderator: May 4, 2017
  2. jcsd
  3. Sep 22, 2009 #2


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    Science Advisor
    Homework Helper

    Hi PolyFX! :smile:
    No you place them head to tail (in either order) (so the arrows "carry on") …

    after all, you're adding momentum to the original momentum, aren't you? :wink:

    so add the vectors! :smile:
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