Question

Two cars collide with each other. Before the collision, one car (m = 1100 kg) is going north at 18 m/s and the other car (m = 1300 kg) is going south at 16 m/s. What is the momentum of the system made up of the two cars after the collision?

Answer 1

it will be the same as before the collision
calculate that

Answer 2

I think that your situation can be described by the subsequent drawing: