Hey, I was looking for a little bit of clarification. Nothing big, but here's the problem... I have a diagram of two objects colliding at an angle, I created a timescale and defined velocities for each object. The collision is fully elastic. I was given the mass of one object, and need to solve for the other... My question was... do I need to determine the components of each object's momentum before and after and use two seperate equations for momentum, one of x and one of y momentum, or can I simply use the velocities and say that total momentum is conserved? And why?