Kinesiology 2241A/B Study Guide - Midterm Guide: Specific Weight, Submersed, Fluid Dynamics
17 Jan 2018
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Document Summary
Force: the force exerted by water against a submersed body. Area: the area of the body in which the force is applied. Water pressure = mass of the water above the body. Pressure increases with depth / weight of the water. Water pressure has no effect on drag or lift. Salt water has more weight density than fresh water (salt adds more mass to the water) Water is not compressible, air is compressible. The density of water does not change with depth or temperature. Air density does change (decreased density as altitude and temperature increase more home runs) Air and fat have lower densities than water allow for people to float. Bone is 50% denser than water, and muscles are slightly denser prevents floating. An upward buoyant force occurs if one displaces a greater mass of water than his or her mass. Floating: occurs if the body weight density is equal or less than water weight density.
