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Two billiard balls of masses m₁-0.45 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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