A rescue helicopter lifts a 84.2-kg person straight up by means of a cable. The person has an upward acceleration of 0.759 m/s2 and is lifted from rest through a distance of 12.2 m. \
(a) What is the tension in the cable? How much work is done by
(b) the tension in the cable and
(c) the person's weight?
(d) Use the work-energy theorem and find the final speed of the person.