A rescue helicopter lifts a 79 kilogram person straight up by means of cable. The man has an upward acceleration of 0.70 m/s2 and is lifted from rest through a distance of 11 meter.
(a) Estimate what is the tension in the cable?
Determine how much work is done by
(b) the tension in the cable and
(c) the man's weight?
(d) Use the work-energy theorem and calculate the final speed of the man.