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A steel ball with a mass of 20.0 g is traveling at 5 m/s. It collides with a stationary steel ball with a mass of 35.0 g. If the collision is perfectly elastic, what is the speed of the second ball after the collision?

A. 2.5 m/s2.5 m/s
B. 3.6 m/s3.6 m/s
C. 5.2 m/s5.2 m/s
D. 8.2 m/s

1 answer

8.2 m/s

Answer: D. 8.2 m/s

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