Newton's laws state that for every force there is an equal and opposite force. I'm thinking of an airplane like a simple system: we put x force in and get y force out. An airplane has the force from thrust and the force from gravity, I understand this. The force of gravity is constant and equals the airplane's mass times gravity. It seems like airplanes cheat newton's laws. Somehow an airplane is only generating about 1/10th the force of gravity, but it is able to use this thrust force to provide the force equal to the gravity force plus a force against the air resistance (drag). I have heard lift explained in Newtons laws as the downwash of air and how the total mass x acceleration of the air in the downwash equals the mass x gravity of the airplane. In short, the airmass acceleration generated by the propeller < than airmass accelerated by the wing: how does this make sense? What am I missing?