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Relative angle between two balls with equal mass after collision

  1. Nov 6, 2014 #1
    I´m working on a physics hand-in and found the relative angle between the two balls after collison(where one is stationary before the collison) to be exactly 90degrees, is this random or is it always so?
    It´s worth mentioning that total momentum and kinetic energy is conserved.

    The hand in is attached and the problem I´m referring to is problem 3

    Attached Files:

  2. jcsd
  3. Nov 6, 2014 #2


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  4. Nov 6, 2014 #3


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    Staff: Mentor

    A.T. has provided a link to the previous discussion of this problem. We can close the thread, and if there are any more questions start a new thread in the physics homework sub forum.
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