Hey, guys need your . i do school online and i have this project due. the problem is, i didn't know i needed most of these supplies till now. can somebody test this for me and give me a good explanation of what happened so i can understand what's going on? in advance! : )

Amoving freight car collides with an identical one that is at rest. if momentum is conserved, what happens to the second car after the collision? it attains the same speed as the first car. it moves at half the speed of the first car. it moves at twice the speed of the first car.