Posted by **James** on Thursday, April 7, 2011 at 11:58pm.

A 0.210 kg plastic ball moves with a velocity of 0.30 m/s. It collides with a second plastic ball of mass 0.109 kg, which is moving along the same line at a speed of 0.10 m/s. After the collision, both balls continue moving in the same, original direction, and the speed of the 0.109 kg ball is 0.26 m/s. What is the new velocity of the first ball?

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