(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A ball of mass 0.440 kg moving east (+x direction) with a speed of 3.30 m/s collides head on with a .220 kg ball at rest. If the collision is perfectly elastic what will be the speed and direction of each ball after the collision?

2. Relevant equations

(.5)m1v1+(.5)m2v2=(.5)m1v1'+(.5)m2v2'

v1= m1-m2/m1+m2(v1) <---I want to how they got from the elastic equation to this

3. The attempt at a solution

Really more than anything I want to figure out how to derive the equation to find velocity. I've looked it up and I don't understand all the steps it took. So far I've figured out that

(.5)m2v2 is equal to zero. So the equation is (.5)m1v1= (.5)m1v1'+(.5)m2v2'. I want to understand every part before I start trying to find the solution.

I don't really understand physics so please be very specific. :/

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# Homework Help: Using the Elastic equation to find the final velocity

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