One hockey puck of mass 0.1 kg strikes an identical stationary puck on a frictionless ice rink. If the first puck had a velocity V(0)=3.8m/s before the collision and v(1)=0.8 m/s after in the same direction, what fraction of the energy was lost?(adsbygoogle = window.adsbygoogle || []).push({});

Where do I even start to find the answer??

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# Hockey Puck Collision

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