The maximum (or terminal) velocity of a skydiver (m=70kg) with arms and legs extended is about 120 mi/h (= 53.6 m/s).

a.

What force does air resistance exert on the skydiver?

b.

If the skydiver pulls in their arms and aims their body downward, the terminal velocity can be increased to about 180 mi/h (= 80.5 m/s). What force does air resistance now exert on the skydiver?

• Solution: part a.
• Solution: part b.