47. Icarus of Greek legend escaped from Crete with his father, Daedalus, on wings made by Daedalus and attached with wax. Against his father’s advice, Icarus flew too close to the sun; as a result, the wax melted, the wings fell off, and he plunged into the sea and drowned. What must have been his minimum cruising speed? What assumptions does your answer involve?
47.
Sample response: Icarus would have been about as tall as an adult female ostrich; hence, if shaped like an ostrich, he would have had to fly about 100 mph.