Jerome pitches a baseball of mass 0.20 kg.The ball arrives at home plate with a speed of 40 m/s and is batted straight back to Jerome with a return speed of 60 m/s.What is the magnitude of change in the ball's momentum?
A) 4.0 kg*m/s
B) 8.0 kg*m/s
C) 18 kg*m/s
D) 20 kg*m/s
Correct Answer:
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