A 1200kg car traveling initially with a speed of 35.0 m/s in aneasterly direction crashes into the rear end of a 9000kg truckmoving in the same direction of 20 m/s. The velocity of thecar right after the collision is 18.0 m/s to the east. (a) what isthe velocity of the truck right after the collisions (b) how muchmechanical energy is lost in the collision? Account for this lossin energy.