A 65 kg sky diver who has deployed her parachute and reached
terminal velocity descends the final 100 m of her jump in 15 s.
Assume that her parachute has a circular cross-section of radius 4
m and the density of the air is 1.3 kg/ m 3 .
Find the drag coefficient of her parachute.
Commentary: Depending on the random numbers generated for your
problem, you may find a drag coefficient greater than 1.0. These
are plausible values.