Sec 3.10 933 33. A balloon and a bicycle A balloon is rising vertically above a level, straight road at a constant rate of I ft/sec. Just when the bal- loon is 65 ft above the ground, a bicycle moving at a constant rate of 17 ft/sec passes under it. How fast is the distance s(!) between the bicycle and the balloon increasing 3 sec later? y(0) s(1) 0