Hi Everyone I would really appreciate some help with a momentum question; I don't want the whole answer, just the first step would be great! I have attached the diagram. A white pool ball is rolling along the pool table and strikes a stationary black ball. The white ball's initial mass and velocity is given (black ball's mass is the same), so initial system momentum is simple. The question wants the x and y momentum components for each ball after collision. But no further angles / velocities are given (angles are not 45 deg) and diagram given is not to scale - so I don't even know where to start! The previous question at least gave one angle and one velocity,so that was simple enough. Is the question flawed, or can someone please assist me just to get started - then I can finish the rest myself?