The air is less dense at higher elevations, so skydivers reach a high terminal speed. The highest recorded speed for a skydiver was achieved in a jump from a height of 39,000 m. At this elevation, the density of the air is only 4.3% of the surface density of air at 20∘C. Estimate the terminal speed of a skydiver at this elevation. Suppose the mass of the skydiver is 90 kg and the cross section area of the skydiver is 0.72 m2. You could consider the diver as a cylinder traveling sideways for this problem. Express your answer with the appropriate units.
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The air is less dense at higher elevations, so skydivers reach a high terminal speed. The...