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Momentum of an explosion problem. Desperately need help

  1. Oct 25, 2008 #1
    1. The problem statement, all variables and given/known data

    An object explodes into three equal masses. One mass moves east with a velocity of 15.0m/s. A second mass moves at a velocity of 10.0m/s at 40 degrees south of east. What is the velocity of the third mass?

    I desperately need help, i forgot my notes at school over the weekend, and this is material from the beginning of the year and I am confused as to where to start. Any help/ suggestions with where to start would really be appreciated as this is diploma exam prep.
     
  2. jcsd
  3. Oct 25, 2008 #2

    alphysicist

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    Homework Helper

    Hi Alphonso,

    You have the correct word "momentum" in the title. What is the momentum equation in the x-direction? in the y-direction?
     
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