What happens to an object when it experiences drag?

When an object experiences drag, it encounters resistance from the fluid through which it is moving, whether that's air, water, or another substance. This resistance opposes the direction of the object's motion and acts to slow it down. The force of drag increases with the speed of the object; the faster the object moves, the greater the resistance it encounters from the fluid.

This phenomenon can be observed in countless practical situations, such as a car moving through air or a swimmer propelling through water. The drag force acts in the opposite direction to the motion of the object, thereby influencing its overall acceleration and speed. In essence, drag plays a critical role in the motion of objects across different mediums, making the understanding of this resistance fundamental in physics.