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

Two billiard balls of equal mass move at right angles and meet at the origin of an xy coordinate system. Initially ball A is moving upward along the y axis at 2.0, and ball B is moving to the right along the x axis with speed 3.7$m/s$. After the collision (assumed elastic), the second ball is moving along the positive y axis.

Image:

http://session.masteringphysics.com/problemAsset/1057762/8/GIANCOLI.ch09.p056.jpg

2. Relevant equations

x direction: m_b*v_b = m_a*v_a*cos(\theta)

y direction: m_a*v_a = m_a*v'_a*cos(\theta) + m_b*v'_b*sin(\theta)

3. The attempt at a solution

I have tried plugging in the given values into those equations, but then i cannot solve for anything because I have too many unknowns. I have tried to solve for v'_a first but without any luck. I also tried combining the equations to no luck.

Please help!

1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

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# Homework Help: 2D Collision Billiard Balls

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