How a wing works

Newtons First Law: "Every object persists in its state of rest or uniform motion in a straight line unless it is compelled to change that state by forces impressed on."

This means that nothing will starts or stops moving until an outside force causes it to do so. An airplane will remain stationary on the ramp until a force great enough to overcome its weight moves it.

Newtons Second Law; "Foce is equal to the change in momentum per change in time. For a constant mass, force equals mass times acceleration."

When something is acted upon by an outside force, its resulting acceleration is inversely proportional to the mass of the body and is directly proportional to the applied force. This takes into account the factors required to overcome Newton's firs law.

Newtons Third Law: "For every action, there is an equal and opposite reaction."

An airplane moves because the propeller moves and pushes the air back, consequently the air than pushs the propeller forward.

  A wing is an airfoil. By definition an airfoil is a structure designed to obtain reaction upon its surface from the air through which it moves or that moves past such a structure. When you look at the side view of an airplanes wing, you will notice that the top of the wing is longer and more curved while the bottom of the wing is generally more flats. That curved upper surface is called the camber of the wing. Wings are designed this way so that it will take advantage of certain physical laws. The two main goals being a positive pressure lifting action from the air below the wing, and a negative pressure lifting action from above the wing. One way that a wing creates that upward lifting force is by increasing its angle of attack, so that more of the relative wind strikes the bottom of the wing rather than the top. This takes advantage of Newtons third law that every action has an opposite and equal reaction. The air striking the bottom of the wing is deflected downwards, in return the wing is deflected upwards. But this does not make up the main source of lift. If it did wings would be perfectly flat and somewhat resemble a kite.

  Instead the main source of lift for a wing is the air that flows over the wing. When a wing is inclined and its Ange of Attack is increased, the air flowing over the wing is forced to increase in velocity. It is at that point moving faster than the air flowing beneath the wing. Before we go on I need to mention one more physical fact and that is Bernoulli's Principle. In essence what Bernoulli's Principle says is that when you increase the velocity of a fluid, being air for this, it's internal pressure decreases. OK now back to the wing. Now remember the air flowing over the wing has increased in velocity due to the increased angle of attack. Applying Bernoulli's Principle to this, its pressure would now be decreased. Creating a low pressure system on top the wing, and a high pressure system beneath the wing. The greater than angle of attack till the wing reaches its critical angle of attack, the differential between the two pressure systems will increase, thus increasing lift.

 That in a nutshell is a crash course on how a wing creates lift. I will go more into depth at a later time into how aerodynamics play a role in flying.