1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Collision in two dimensions problems

  1. Oct 17, 2012 #1
    1. On a table (defining the x,y-plane laying 3 identical coins A,B and C with identical diameter of 18.00mm. The coordinates of their centers are Z(0,0), Y(60.0,0), X(60.0, 45.0) all given in mm.
    Under what angle relative to the x-axis one has to push Z against Y so that Z performs after the collision with Y another central collision with X?
    Assume elastic collision, neglect friction.




    2. m1(vi1 - vf1) = m2(vf2 - vi2)
    vi1 + vf1 = vf2 + vi2




    3. The attempt at a solution
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. I really don't understand how to find the angle when we don't have the velocities.
     
  2. jcsd
  3. Oct 17, 2012 #2

    TSny

    User Avatar
    Homework Helper
    Gold Member

    Hello madlin.

    Increasing the initial speed of Z would be like speeding up a video of the whole process. So, the answer will not depend on the speed.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Collision in two dimensions problems
Loading...