A92.0-kg skydiver falls straight downward with an open parachute through a vertical height of 325 m. the skydiver's velocity remains constant. what is the work done by the nonconservative force of air resistance, which is the only nonconservative force acting?
a) +2.93 times 10^5 j
b) 0j
c) answer is not obtainable, because insufficient information about the skydiver's speed is given.
d) -2.93 times 10^5 j