A large blue marble of mass 3.5 g is moving to the right with a velocity of 15 cm/s. The large marble hits a small red marble of mass 1.2 g that is moving to the right with a velocity of 3.5 cm/s. After the collision, the blue marble moves to the right with a velocity of 5.5 cm/s.
What is the magnitude of the final velocity of the red marble?
9.2 cm/s
14 cm/s
24 cm/s
31 cm/s
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