A 1050 kg sports ca is moving westbound at 15.0m/s on a level road when is collides with 6320kg truck driving east on the same road at 10.0m/s. The two vehicles remain locked together after the collision.
a) What is the velocity (magnitude and direction) of the two vehicles just after the collision
b) At what speed should the tuck have been moving so that it and the car are both stopped in the collision
c) Find the change in kinetic energy of the system of two vehicles for the situations of part (a) and part (b). For which situation is the changein kinetic energy grater in magnitude?