A skier of mass 70.0 kg is pulled up a slope by a motor driven cable. (a)

Question:

A skier of mass 70.0 kg is pulled up a slope by a motor driven cable.
(a) How much work is required to pull him a distance of 60.0 m up a 30.0° slope (assumed frictionless) at a constant speed of 2.00 m/s?
(b) A motor of what power is required to perform this task?