As the skydiver moves downward with a speed υ, the air drag exerted by the parachute on th...

As the skydiver moves downward with a speed υ, the air drag exerted by the parachute on the skydiver has a magnitude Fd = Cdv2 (Cd is a drag coefficient) and a direction opposite to the direction of motion. Determine the expression of the skydiver’s acceleration in terms of Cd, υ, the mass of the skydiver m, and the acceleration due to gravity.

Figure P3.8