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April 19, 2014

Homework Help: Physics

Posted by Joe on Monday, August 6, 2012 at 8:35pm.

An air-hockey puck of mass m floats across the table essentially frictionless on a cushion of
air. This puck bumps nearly head-on into a second puck that has 3 times the mass, moving in the
opposite direction but with the same speed, v i , as the lighter puck. Immediately after the
collision, the first puck is moving at a right angle to its original direction. What is the final speed
of this puck? What is the final velocity of the heavier puck? (That means speed and direction)
Answers will contain m and v i and some angle θ.

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