Pressure Difference on an airplane wing

littowadey
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Find the pressure difference on an airplane wing where air flows over the upper surface with a speed of 128 m/s, and along the bottom surface with a speed of 105 m/s.

If the area of the wing is 26 m2, what is the net upward force exerted on the wing?
 
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I am totally stuck on this one.. I don't even know where to begin...
 

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