A 10,000-kg freight car moving at 2 m/s collides with a stationary 15,000-kg freight car. The two
Question:
A 10,000-kg freight car moving at 2 m/s collides with a stationary 15,000-kg freight car. The two cars couple together and move off at
a. 0.8 m/s
b. 1 m/s
c. 1.3 m/s
d. 2 m/s
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