A 50 kg skater at rest on a frictionless rink throws a 2 kg ball, giving the ball a velocity of 10 m/s.
Which statement describes the skater's subsequent motion?
A. 0.4 m/s in the same direction as the ball's motion
B. 0.4 m/s in the opposite direction of the ball's motion
C. 2 m/s in the same direction as the ball's motion
D. 2 m/s in the opposite direction of the ball's motion
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