Ball A, which weighs 2 kilograms, is moving at 0.5 meters/second and strikes stationary Ball B at the direct center of the ball. Ball B, which weighs 3 kilograms, moves off at 0.3 meters/second and in the same original direction Ball A was moving. Ball A continues to move forward, but only at 0.1 meters/second. Is momentum conserved? Explain. I don't even know where to start, or what to do so could I have some help with this?