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Momentum and Conservation of Momentum Problem

  1. Aug 25, 2015 #1
    1. The problem statement, all variables and given/known data
    hello. i tried to solve for the problem, which was quite difficult for me and i'm not sure whether i approached it correctly, so if someone will help me figure it out thank you!

    the problem:
    1. a 2 kg firework is shot vertically, at v=50 m/s
    a. what is the velocity and momentum of the firework as it reaches a height of 50 m'?
    b. in the height of 50 m' the firework explodes into two equal particles. particle 1 moves horizontally in 30 m/s.
    what's the horizontal velocity of particle 2 after the explosion? what's the velocity of particle 2 and it's direction.
    c. what's the kinetic energy of particle 2 when it reaches the floor?
    upload_2015-8-25_19-0-1.png
    this is my answer, explaining all the steps i took:
    upload_2015-8-25_20-24-32.png
    2. Relevant equations

    3. The attempt at a solution
    View attachment 87789
     
  2. jcsd
  3. Aug 25, 2015 #2

    DEvens

    User Avatar
    Education Advisor
    Gold Member

    It's kind of hard to read your hand writing. So I didn't check it in detail.
     
  4. Aug 25, 2015 #3
    thank you, sorry.. i tried to make it as organized as i could.. the thing that was hard for me the most was to find what's the horizontal velocity and velocity for the second particle.
     
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