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Homework Help: Conservation of motion what the velocity of other fragment

  1. Sep 26, 2010 #1
    1. The problem statement, all variables and given/known data
    A shell traveling with speed Vo exactly horizontally and due north explodes into 2 equal mass fragments. One fragment traveling vartically up with speed V0 what is the velocity of the other one?


    2. Relevant equations

    v=(m1*v1+m2*v2)/ m1+m2

    3. The attempt at a solution
    Would I just use this equation and just solve for V2? This is the only formula in the book section that looks like I could use to solve it. But not sure cause this formula is for 2 separate objects that hit each other then moves as a single object, thinking maybe i can make it as a single object that then breaks into 2 objects.
     
  2. jcsd
  3. Sep 26, 2010 #2
    Let the other fragment move at an angle (theta) to the horizontal.
    Apply momentum conservation in x and y directions.
    Solve 2 equations and you will get your answer
    I got v=(5)^1/2 V0 at an angle 26.6 degrees N-E
     
  4. Sep 26, 2010 #3
    k thxs ill try it out
     
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