A zip-line steel cable is being constructed for a reality television competition show. The high end of the zip-line is attached to the top of a 50-foot pole while the lower end is anchored at ground level to a stake 50 feet from the base of the pole.
a. A contestant takes 6 seconds to reach the ground from the top of the zip-line. At what rate is the contestant moving down the line?
b. At what rate is the contestant dropping vertically?