Two vehicles, a 3,650-kg car and a 9,850-kg truck, are parked in a lot 25.0 meters apart. a. Calculate the gravitational force between these two vehicles. b. 500 kilograms of supplies are added to the truck. Explain whether the gravitational force increases, decreases, or stays the same between the two vehicles. Remember to identify all data (givens and unknowns), list equations used, show all your work, include units and the proper number of signicant digits, and write explanation in complete sentences to receive full credit. (7 points)