Acar with a mass of 1.1 x 10^3 kilograms hits a stationary truck with a mass of 2.3 x 10^3 kilograms from the rear end. the initial velocity of the car is +22.0 meters/second. after the collision the velocity of the car is -11.0 meters/second. what is the velocity of the truck after this elastic collision? a.) +13 meters/second b.) +20 meters/second c.) 15.7 meters/second d.) +7.5 meters/second e.) +9.8 meters/second