Speed of Plane/Boat

See attached file for full problem description.

30. A boat is pulled into a dock...
(a) Determine the speed of the boat when there is 13 feet of rope. What happens to the speed of the boat as it gets closer to the dock?
(b) Determine the speed of the rope when there is 13 feet of rope. What happens to the speed of the rope as the boat gets closer to the dock?

32. An airplane is flying at an altitude of 5 miles and passes directly over a radar antenna. ... The radar detects that the distance is changing at a rate of 240 mph. What is the speed of the plane?

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