Curling Collisions

Why have I never looked at curling before? It's that sport where people slide rock like things on ice and collide with other rock like things. I am going to look at the velocity of the stone before the first collision and the velocities of the two after the collision. This gives an initial x- and y-velocity of: After the collision, it has a velocity of: Similar plots for stone B. If there are no external forces, then the change in momentum of stone A will be the opposite of the change in momentum of stone B.