|Daniel Bernoulli physics
Liquids and gases increasing in motion have the energy of their increase subtracted from their pressure controlling the flow of fuel into a carburetor and lifting the wing of an airplane so that the sum of all forms of energy remains constant.
Some might think a wind, filling a sail, pushes the boat, but this is not so. The sail is only a flexible airfoil whose curve forces the air passing on one side to flow more quickly than the air passing on the other, so that the increase in speed is compensated by a decrease in pressure that pulls the boat through the sea, even against the wind.
Cutting through to the essence
Bernoulli’s principle, stated for an ideal fluid— with no viscosity, no drag, and no compressibility, is true enough to help with understanding, true enough to lift an airplane even though all kinds of odd things happen as air swirls past.