Definition
Fluid mechanics is the branch of physics that studies the behavior of fluids (liquids, gases, and plasmas) and the forces on them. It's about understanding how fluids move, interact with objects, and respond to different conditions. For example, it explains how airplanes fly, how water flows through pipes, and how blood circulates in our bodies. Fluid mechanics involves concepts like pressure, viscosity, and turbulence. Think of it as the physics of flow.