February 22, 2017

Homework Help: Physics

Posted by Fred on Tuesday, November 24, 2009 at 8:08pm.

A ball of mass 0.640 kg moving east (+x direction) with a speed of 3.10 m/s collides head-on with a 0.780 kg ball at rest. If the collision is perfectly elastic, what will be the speed and direction of each ball after the collision?

1. ball originally at rest

2. ball originally moving east

im alittle confused about this problem.
if you could give more details and give me the equations for me to start. that would be very helpful. much appreciated

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