The way an airplane flies may seem magical. How can something so big and so heavy fly.
Several forces act on an airplane.
A force is a push or a pull on something. You use force when you throw a ball, pull a wagon, or walk. When you walk, you push backward on the floor, and the resistance from the floor pushes you forward. Forces always work in pairs, on different bodies, in opposite directions, and at the same time. Four main forces act on airplanes.