A 1000 kg car traveling initially with a speed of 34 m/s in an easterly direction crashes into the rear end of an 8840 kg truck moving in the same direction at 19 m/s. The velocity of the car right after the collision is 17.1 m/s to the east. What is the velocity of the truck immediately after the collision?
Answer in units of m/s. How much mechanical energy is lost in the collision?
Answer in units of J.