* Lift: This is the upward force that opposes gravity, generated by the shape of the airplane's wings and the movement of air over them.
* Drag: This is the force that resists the airplane's motion through the air.
* Thrust: This is the forward force that propels the airplane through the air, provided by the engines.
* Bernoulli's Principle: This principle explains how the shape of the wing and the airflow create lift. It states that as the speed of a fluid (like air) increases, its pressure decreases. The curved upper surface of the wing causes the air to travel faster, creating lower pressure above the wing. This difference in pressure between the top and bottom of the wing generates lift.
In essence, airplanes fly because the shape of their wings and the movement of air create lift, which is greater than the force of gravity pulling the plane down.
