February 20, 2017

Homework Help: physics

Posted by Skyler on Sunday, August 15, 2010 at 10:53am.

A 8.5 kg steel ball, travelling left to right at 12 m/s, undergoes an elastic collision with a 5 kg steel ball at rest. To the nearest Joule, what is the Total Kinetic Energy of the two balls after collision?
If the first ball in the question above has a mass of 10 kg and the second ball is travelling at it with a speed of 3 m/s, what is the velocity, to one decimal place, of the first ball after collision?

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