A Passenger car (m = 10.0 kg) and a flat car (m = 7.5 kg) collide and move off as shown. The left car was initially traveling at 3.5 m/s right and the right car was initially traveling at a velocity of 2.2 m/s left. a. What was the initial momentum of the right car? b. What was the initial momentum of the left car? c. What was the final velocity of the coupled cars? Remember, velocity has both a magnitude and a direction.