Air resistance is a force that opposes motion through air. It acts on moving objects such as cars, airplanes, and falling objects. This force is part of how objects move through Earth’s atmosphere. It is present whenever objects travel through air.

Air resistance is found in many environments on Earth, especially where objects move at different speeds. It increases with the speed of an object and the size of its surface. Objects with larger surfaces experience more air resistance.

Air resistance is part of the forces acting on moving objects. It is observed in natural and human-made systems. This force is important in describing motion through air.