1. The problem statement, all variables and given/known data There are two balls travelling and they collide. How do there momentum change. What is the impulse done to ball B by ball A. 2. Relevant equations delta momentum = 0 impulse = ? 3. The attempt at a solution the first part i think its C becuz A is moving up and B is moving down the horizontal movement didnt change and so the impulse from ball A to ball B must be pointing DOWN right? and the answer must be B ?? right?