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1. A 0.022-kg superball rolls with a speed of 3.5 m/s toward a stationary 0.027-kg superball. The balls have a head-on elastic collision. What is
1. A 0.022-kg superball rolls with a speed of 3.5 m/s toward a stationary 0.027-kg superball. The balls have a head-on elastic collision. What is the velocity of each ball after the collision?