An airplane has a mass of 2.8×106 kg , and the air flows past the lower surface of the wings at 81 m/s .

Question

Part A:

If the wings have a surface area of 1100 m2 , how fast must the air flow over the upper surface of the wing if the plane is to stay in the air?

Express your answer to two significant figures and include the appropriate units.

Answer 1

173KG