A plane is in level flight and each of its wings has an area of 20m^2. If the speed of air on the upper and lower surface is 80 m/s and 70 m/s respectively, then the mass of the plane is (density of air = 1 kg/m^3)
(1) 1500 kg
(2) 1700 kg
(3) 1650 kg
(4) 1750 kg
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Answer:
3 1750
Explanation:
is the correct answer
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