Air resistance

Air resistance is a force that opposes the motion of an object moving through the air. When an object moves, air molecules collide with its surface, creating a drag that slows it down. The amount of air resistance depends on the object's speed, shape, size, and the density of the air. For example, a smooth, streamlined object experiences less air resistance than a flat or irregular one. This force plays a significant role in activities like driving, flying, and ball sports, influencing how quickly objects accelerate or decelerate in the air.