The sky diver equipped with parachute falls from rest towards earth. Total weight of man and equipment is 160 lbs. Before te parachute opens, air resistance (in pounds) is numerically equal to (1/2)v, where v is velocity ( in feet per second). Parachute opens 5 sec after fall starts, after it opens air resistance is numerically equal to (5/8)v2.
i) Determine velocity of skydiver before parachute opens
b) how far has diver fallen by time parachute opened?
c) Determine velocity of diver after parachute opens.
d) how far has diver travled 15 seconds after leaving plane?
e) how long it takes diver to reach ground.