A 1130 kg car traveling initially with a speed of 25.60 m/s in an easterly direction crashes into the back of a 9 550 kg truck moving in the same direction at 20.0 m/s. The velocity of the car right after the collision is 18.0 m/s to the east.
A) What was the velocity of the truck right after the collision? (4 sig figs) - Must have magnitude and direction
B) What is the change in mechanical energy of the car-truck system in the collision?