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March 28, 2015

Homework Help: Physics

Posted by Zach on Sunday, January 15, 2012 at 8:48pm.

A rock (m = 1.5 kg) moving at 4.2 m/s north collides with a ball (m = 0.061 kg) that is initially at rest. What is the velocity of the rock after the collision if the velocity of the ball after the collision was 8.4 m/s north?

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