A railroad car that weighs 20,000lb is traveling eastward with avelocity whose magnitude is 5 fps. A second car, on the same track,weighs 40,000lb is also traveling in and easterly direction with avelocity of 7.81 fps. When the cars collided, they became coupledtogether and then both cars moved with the same velocity. Iffriction between the cars and the rails is neglected, what were themagnitude and the direction of the cars after collision?