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

A 0.0600 kg tennis ball, moving with a speed of 2.50 m/s, has a head-on collision with a 0.0900 kg ball initially moving away from it at a speed of 1.00 m/s. Assuming a perfectly elastic collision, what is the speed and direction of each ball after the collision?

2. Relevant equations

m1v1+m2v2 = m1v1'+m2v2'

3. The attempt at a solution

with the given, I know that

m1= .06 kg

m2=.09 kg

v1= 2.5 m/s

v2= 1.0 m/s

after this, I don't know where to start?

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# Homework Help: Speeds of tennis balls after collision

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