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Consider an airplane flying at a constant speed of 900 km>h, 10 km above the ground....

Consider an airplane flying at a constant speed of 900 km>h, 10 km above the ground. (a) What is the plane’s downward acceleration? (b) Draw a free-body diagram for the airplane. (c) Why don’t people in the airplane feel weightless as astronauts do traveling 290 km higher up?

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