A force with magnitude 40N acts directly upward from the xy-plane on an object with mass 5kg. The object starts at the origin with initial velocity v(0)=5i-4j. Find its position function

An athlete throws a ball at an angle of 45 to the horizontal, at an initial speed of 43 ft/sec. It leaves his hand 7 ft. above the ground. Not that the acceleration of gravity is 32 ft/sec^2 a.) Where is the shot located 2 seconds later (both directions) b.) How high does the shot go? c.) Where does the shot land