Question

What would the final velocity be if a 3560 kg train car traveling at 10 m/ collide with a 3200 kg train car traveling at 5 m/ and the train car tick together after the colliion?

Answer 1

After the collision would be the same.

This is because of the law of conservation of momentum, which states that the total momentum of a system remains constant. In this case, the total momentum of the two train cars before the collision is 3560 kg x 10 m/s + 3200 kg x 5 m/s = 44,800 kg m/s. After the collision, the total momentum of the two train cars is still 44,800 kg m/s. Therefore, the final velocity of the two train cars must be the same.