A dinghy is pulled toward a dock by a rope from the bow through a ring on the dock 6 ft above the bow. The rope is hauled in at the rate of 3 ft/sec. Complete parts (a) and (b). Ring at edge of dock 16' a. How fast is the boat approaching the dock when 10 ft of rope are out? f/sec Type an integer or a simplified fraction.) b. At what rate is the angle 0 changing at this instant? rad/sec Type an integer or a simplified fraction.)