A 965 kg car traveling initially with a speed of 25.3 m/s in an easterly direction crashes into the rear end of a(n) 9510 kg truck moving in the same direction at 16.8 m/s. The velocity of the car right after the collision is 13.1 m/s to the east
What is the velocity of the truck immediately after the collision and
How much mechanical energy is lost in the collision?