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Constants At what speed should the truck have been moving so that both it and the car are stopped in the collision? Express your answer with the appropriate units. A 1050 kg sports car is moving westbound at 15.0 m/s on a level road when it collides with a 6620 kg truck driving east on the same road at 12.0 m/s. The two vehicles remain locked together after the collision. UÁ ? m Utruck = 12 S Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining

Part D Find the change in kinetic energy of the system of two vehicles for the situation of part A. Express your answer with the appropriate units. F ? HA KA2-KA1 = Value Units Submit Request Answer

Part E Find the change in kinetic energy of the system of two vehicles for the situation of part C. Express your answer with the appropriate units. НА, ? Kc2 - Ka = Value Units Submit Request Answer