Train car A has a mass of 2000kg and an initial velocity of 3.0 m/s traveling East. Train car B has a mass of 1500kg and an initial velocity of 2.0 m/s traveling West (given as -2.0 m/s in the same direction as car A). The final velocity of train car B is 2.0 m/s traveling East. What is the final velocity of train car A? Or does it come to complete stop after the collision?