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{excerpt:hidden=true}Explore the force from air resistance acting on a skydiver at various stages of the dive.{excerpt}
h3. Part A

{table:align=right}{tr}{td}!parachute_accelerate.jpg!{td}{tr}{table}
In the photo at right, Sgt. 1st Class Cheryl Stearns of the U.S. Army's Golden Knights parachute team demonstrates how to maximize acceleration during a skydive (photo by Cpl. Sean Capogreco courtesy U.S. Army).  Suppose that a 75 kg skydiver was using this technique.  If the skydiver's current acceleration is 2.0 m/s ^2^ toward the ground, what is the force of air resistance acting on the skydiver? 

System:  The skydiver will be treated as a [point particle] subject to external influences from the earth (gravity) and the air.  

Model:  [Point Particle Dynamics].