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Homework Help: Momentum 2d

  1. Feb 10, 2015 #1
    1. The problem statement, all variables and given/known data
    The problem is stated here (from brilliant.org)
    2. Relevant equations

    momentum = mass * velocity

    3. The attempt at a solution
    My attempt at a solution can be found here:

    I get the answer 0.035kg, but that is not an option. What am I doing wrong?
  2. jcsd
  3. Feb 10, 2015 #2


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    Homework Helper

    Momentum is a vector. Only the eastern component of m2's momentum is equal to the momentum of the piece that went due west.
  4. Feb 10, 2015 #3
    Oh god this is embarassing, how could I miss that. Haha well thank you :)
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