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

I cooked up an example of a collision between 2 pool balls: one comes in from the right at 2.5 m/s and hits a stationary one. The original goes off at 30° up, 1m/s. What does the lower one do? I calculated the lower one to go down -17°, 1.71 m/s using conservation of momentum/ simultaneous equations. Then I calculated kinetic energies to be .531 before and .334 after (mass of pool balls assumed at .17kg)

My question is about elasticity. I didn't make any assumptions about it, so I expected to get a perfectly elastic collision (kinetic energy preserved). I've also read that pool balls are mostly elastic. Does this mean that my problem setup assumes an inelastic collision? Would it be impossible to get a pool ball collision like this in real life?

2. Relevant equations

p_{start}= p_{final}

KE = 1/2MV^{2}

3. The attempt at a solution

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# Homework Help: Pool ball collision, kinetic energy

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