Answer Happy

Two bumper cars in an amusement park ride collide elastically as one approaches the other directly from the rear. Car A has a mass of 435 kg and car B505 kg. Car A approaches at 4.50 m/s and car B is moving at 3.70 m/s. (Figure 1) Figure 1 of 1 Part B Determine the velocity of car B after the collision. Express your answer to three significant figures and include the appropriate units.
Calculate the change in momentum of car A after the collision. Express your answer to three significant figures and include the appropriate units. Part D Calculate the change in momentum of car B after the collision. Express your answer to three significant figures and include the appropriate units.