Asked by Cheryl

p = mv

Scenario #4
At a station ,a train weighs approximately 1000kg and is moving at 50m/s on a railway and collides with an incoming train weighing 1000kg and moving at -20m/s.

1)If these two trains stick together and begin to move after having being collided with one another , at what velocity will they move at?

2)The collision that occurred was an inelastic one , Suppose if the collision that occurred was a elastic one , at what rate of speed will the trains move at on the railway?

3)If the trains weighed 2000kg what will be the momentum of the trains?

Answers

Answered by Henry
1. M1*V1 + M2*V2 = M1*V + M2*V.
1000*50 - 1000*20 = 1000V + 1000V,
30,000 = 2000V,
V = 15 m/s.

3. Momentum = 2000*50 - 2000*20 = 60,000 kg*m/s.


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