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Svetllana [295]
3 years ago
10

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 collisi

on the green train moves with a speed of 3 m/s. What is the final speed of the blue train?
Physics
1 answer:
Nata [24]3 years ago
7 0
Explaination :

Momentum = mass x speed

p = (30 kg) (3 m/s)

p = 90 kg m/s
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