A skydiver equipped with a parachute and equipment falls from an altitude of 20,

Question

A skydiver equipped with a parachute and equipment falls from an altitude of 20,000ft. The total weight of the skydiver and all his equipment is 160lb. Before the parachute opens, the air resistance (in pounds) is numberically equal to 1/2v where v is velocity (in feet per second). The parachute opens 5 seconds after the fall begins, after it opens the air resistance is numerically equal to 5/8v2, where v is velocity (in feet per second).

A) find the velocity of the skydiver before the parachute opens?

B) How far has the diver fallen by the time the parachute opened?

C) Find the velocity of the diver after the parachute opens?

D) How far has the diver traveled 15 seconds after leaving the plane?

E) How long does it take the diver to reach the ground?

Explanation / Answer

http://www.math.ust.hk/~machiang/150/2011-12/2351_wksht04_solu_11_12fall.pdf

please refer to the answer of the question 2 on the link i posted, that will help you solve your question very easily

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