Physics, 07.08.2019 23:30 Ycdi

Ablue 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 momentum of the blue and green train combined?
a. 90 kgm/s
b. 110 kgm/s
c. 50 kgm/s
d. 200 kgm/s

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Ablue train of mass 50 kg moves at 4 m/s toward a green train of 30 kg initially at rest. the trains...