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Two pucks collide on an air hockey table. Puck A has a mass of 21 g and is initially traveling in the +x direction at 6.2 m/s. Puck B has a mass of 84 g and is initially at rest. After the pucks collide, puck A moves away at an angle of 49 above the +x axis, while puck B travels at an angle of 42 below the +x axis.

a. Calculate puck A's final speed.

b. Calculate puck B's final speed.

c. What fraction of kinetic energy was lost in this collision?

I really have no clue how to start this question. Thanks in advance.

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# Momentum (I think)

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