I am working on a lab regarding the flow of water through various meters, i.e. Venturi, Orifice and Rotameter. One of the things we are calculating is the Inlet Kinetic Head loss of these meters. My problem is this, I have not taken any fluids courses yet, and have no concept of what this is. While the lab provides the formulas and sample calculations, I am lacking concept. I have tried Googling, but get lots of complicated things like peoples research etc... Nothing of a simple explanation. Any help with an explanation would be great, or even a link or two to follow up on. Thanks.