Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Explosion (q34)

  1. Nov 7, 2007 #1
    "Explosion" (q34)

    I have not sure how to get started with this question:
    http://tinyurl.com/2ljrwk

    Hope that anybody can help.
     
  2. jcsd
  3. Nov 7, 2007 #2

    Doc Al

    User Avatar

    Staff: Mentor

    What conservation law applies in the case of an explosion?
     
  4. Nov 7, 2007 #3
    I see, followed is the working:

    let direction of one of the particles with 20m/s as x direction
    in x direction
    0=2*20+2*20*cos60+2Vx
    in y direction
    0= 0 +2*20*sin60+2Vy
    V=sqrt(Vx^2+Vy^2)=34

    ke=0.5*2*(20^2+20^2+34^2)=2.0KJ, answer is c.
     
  5. Nov 7, 2007 #4
    Is it correct?
     
  6. Nov 7, 2007 #5

    andrevdh

    User Avatar
    Homework Helper

    I agree with your answer.
     
  7. Nov 7, 2007 #6
    I see, thanks for the confirmation :)
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook