Two billiard balls of masses m,-0.45 kg and m₂-0.50 kg are initially at rest. A cue gives the 0.45-kg billiard ball an initial speed of 0.30 m/s directed 30° above the x-axis. The 0.45-kg ball then collides with the 0.50-kg ball, which results in the 0.50-kg ball moving with a speed of 0.20 m/s 20° above the horizontal. What is the velocity of the 0.45-kg ball directly after the collision?

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Clutches, Brakes, Couplings, and Flywheels

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