A 5000-kg freight car moving at 2 m/s collides with a 10,000-kg freight car at rest. They couple upon collision and move away at
A. 2 m/s.
B. 1 m/s.
C. 2/3 m/s.
D. 1/3 m/s.
Answer:A
A 5000-kg freight car moving at 2 m/s collides with a 10,000-kg freight car at rest. They couple upon collision and move away at
A. 2 m/s. B. 1 m/s. C. 2/3 m/s. D. 1/3 m/s.