Rate of descent—Parachutes. The U.S Army is considering a new parachute, the Advanced Tactical Parachute System (ATPS). A jump at 2,880 ft using the ATPS system lasts 180 secs.
(A) Find a linear model relating altitude a (in feet) and time in the air t (in seconds).
(B) Find the rate of descent for an ATPS system parachute.
(C) Find the speed of the parachutist at landing.
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