Physics, 13.12.2020 19:30, kingrebl4267

A blue train of mass 50 kg moves at 4 m/s toward a green train of 30 kg initially at rest. The trains collide. After the collision the green train moves with a speed of 3 m/s. What is the final speed of the blue train? A. 3.4 m/s
B. 1.6 m/s
C. 5 m/s
D. 2.2 m/s

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A blue train of mass 50 kg moves at 4 m/s toward a green train of 30 kg initially at rest. The train...