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Elastic Collision shuffleboard problem

  • Thread starter sskk221
  • Start date
  • #1
10
1

Homework Statement



A moving shuffleboard puck has a glancing collision with a stationary puck of the same mass. If friction is negligible, what are the speeds of the pucks after the collision?
http://img179.imageshack.us/img179/277/phyqp2.jpg [Broken]

The Attempt at a Solution


I ended up with this:
0.95 = Vx1*cos50 + Vx2*cos40
and
0= Vy1*sin50 - Vy2*sin40

--
I know that both momentum and energy are conserved in elastic collision but I got no idea how to actually apply the concept. I think i'm looking too much into it and missing something simple. Thanks

Homework Statement





Homework Equations





The Attempt at a Solution

 
Last edited by a moderator:

Answers and Replies

  • #2
cristo
Staff Emeritus
Science Advisor
8,107
73
You can apply it in a similar way to the way you used conservation of momentum. What is the equation for conservation of kinetic energy? Split this up into x and y components ike you did with the momentum.
 

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