Question

A 6000 kg train car traveling at 2.5 m/s collides with another 6000 kg train car, now they are both moving but with a speed of 1.25 m/s. This is an example of

Answer 1

Do you know what they call the mass of an object times its velocity?

Answer 2

Momentum?

Answer 3

yes

Answer 4

What is the momentum for the two trains before the collision?

Answer 5

Train one is 6000 kg with v=2.5 m/s, train two is also 6000kg with v=0 m/s

Answer 6

What is the total momentum of the two trains before the collision?

Answer 7

But the answers I have aren't looking for the total momentum? Its asking for whats the example. My guess is the law of conservation of momentum?

Answer 8

Okay, that was what I was leading up to. The total moment before the collision for the two trains is the same as after which is an example of Conservation of Momentum. You can prove it if you do the math.
(6000kg)(2.5m/s)+(6000kg)(0m/s= (6000+6000kg)(1.25m/s)

Answer 9

Ooh, Okay. I get what you mean now, Thank you for the help!

Answer 10

welcome