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Homework Help: Collision of Two Masses

  1. Oct 15, 2013 #1
    http://i.minus.com/i7YDkagp0bChQ.png [Broken]

    2. Relevant Equations

    p = mv

    (v1m1 + v2m2)
    Vf = --------------------

    3. The attempt at a solution

    I got that the total momentum was 9.64 by using p=mv for summing m1, v1 and m2, v2. Then I used inverse trig to try to find the angle, but all the answers I submit are incorrect. I'm not sure what way to go here.
    Last edited by a moderator: May 6, 2017
  2. jcsd
  3. Oct 15, 2013 #2


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    The momentum is vector, and the momentums sum as vectors.

  4. Oct 15, 2013 #3
    All the answers are still positive, so I don't understand what you mean.
  5. Oct 15, 2013 #4


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    How do you add two vectors?

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