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Homework Help: 2d explosion momemtum vector

  1. Sep 17, 2009 #1
    1. The problem statement, all variables and given/known data

    A 4.00-kg cannon ball is flying at 18.5 m/s
    [0º] when it explodes into two fragments.
    One 2.37-kg fragment (A) goes off at
    19.7 m/s [325º]. What will be the velocity of
    the second fragment (B) immediately after
    the explosion? Assume that no mass is lost
    during the explosion, and that the motion
    of the fragments lies in the xy plane.

    2. Relevant equations

    p = mv

    3. The attempt at a solution


    K so i got my graph drawn, but because this is an explosion i have no idea how to set up the x and y equations, any help?
  2. jcsd
  3. Sep 17, 2009 #2


    User Avatar
    Homework Helper

    You have to apply the conservation momentum. The explosion does not make any difference.
    Resolve the momentum Pa and Pb along x and y axis. And proceed.
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