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Q. what is the net upward force on an airplane wing of area 20 m^2 if the speed of flow is 320 m/s across the top of wing and 305 m/s across the bottom of the wing?

Q. A 10.00kg box on a smooth, frictionless, horizontal surface experiences a downward force of 30n at an angle of 40 degrees to the horizontal. The box moves 1.50 m to the right. What was the work done by gravity?

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