drag force

Drag force is the resistance an object experiences when moving through a fluid, like air or water. It acts opposite to the object's direction of motion, making it harder to move forward. This force depends on the object's shape, size, speed, and the fluid's properties. For example, a sleek car faces less drag than a boxy one at the same speed, and swimming faster increases water resistance. Understanding drag helps in designing vehicles and objects for efficiency, ensuring they move smoothly with minimal resistance through their respective fluids.