Question

An air hokey puck (A), of mass m, is moving along the x-axis with speed vo....

An air hokey puck (A), of mass m, is moving along the x-axis with speed vo. It hits an identical stationary puck (B). After the collision, puck A is moving 30 degrees above the x-axis and puck B moves 45 degrees below the x-axis.

a) Find the final speed of puck A in terms of m, vo, and the angles defined.
b) Find the change in kinetic energy of the system.

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