A skier of mass 65 kg is pulled up a slope by a motor-driven cable, a)How much work is required to pull him 50 m up a 30° slope (assumed frictionless) at a constant speed of 2.9 m/s? b)how much horsepower must the motor have to preform this task? Please help!! I don't know what to do with this... I know it's a simple question but i've managed to get all confused. Where do I start? :uhh: Thank you!