Chapter 15: Human Movement in a Fluid Medium

Summary• The relative velocity of a body with respect to a fluidand the density, specific weight, and viscosity of thefluid affect the magnitude of fluid forces.• The fluid force that enables flotation is buoyancy.• Drag is a fluid force that acts in the direction of thefree stream fluid flow.• Lift is a force that can be generated perpendicular tothe freestream fluid flow by foil-shaped objects.