👉 Motion fluid refers to the smooth, continuous movement of fluids—such as liquids and gases—through various states and environments, governed by principles of fluid dynamics. This motion can be characterized by its velocity, direction, and the forces acting upon it, including viscosity, pressure, and external influences like gravity. In essence, motion fluid describes how fluids respond to changes in their surroundings, whether it's flowing through pipes, moving across surfaces, or being displaced by other fluids. Understanding motion fluid is crucial in numerous fields, including engineering, meteorology, and biology, as it helps explain phenomena like ocean currents, blood flow in the circulatory system, and the behavior of gases in atmospheric conditions.