Deftying Gravity

If gravity pulls all objects within range towards Earth, how do some objects, like planes, defy gravity? So, the specific example of an airplane actually requires a long explanation for its ability to fly. This explanation involves the concept of the airplane's wings generating a lift by making use of Newton's laws, along with several other concepts. What is important to understand, however, is that because a plane has its own acceleration and power, in addition to an aerodynamic shape and other aspects, it is able to push against the force of gravity (which is still acting upon it), take off into the air, and remain airborne for an extended period of time.



Aerial view of California