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Homework Help: Direction of Masses in Collision

  1. May 16, 2015 #1
    1. The problem statement, all variables and given/known data

    2. Relevant equations

    Elastic collision: KE conserved

    3. The attempt at a solution

    I don't think there's really anything to work out...why would the 2M block move right as well?
  2. jcsd
  3. May 16, 2015 #2
    Here's another problem on the same topic, that I can't decide ioxOtmi.png
  4. May 16, 2015 #3


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    Science Advisor

    In both, use "conservation of momentum" and "conservation of energy" to get two equations to solve for the two velocities.
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