A Question 7 (2 points) Retake question ()Listen The value of the before- and after-collision momentum of two colliding objects is shown in the diagram below. The direction of the momentum is indicated by the arrow. What is the total momentum of the system before the collision and after the collision? Before Collision After Collision A B A B p = 30 kg.m/s p = 15 kg.m/'s p = 20 kg.m/s p=25 kg.m/s