A 70.0 kg skier rides a 2700 m long lift to the top of a mountain. The lift makes an angle of 14.3° with the horizontal. What is the change in the skier's gravitational potential energy?
The Attempt at a Solution
I can't seem to find why Ef * s = mas
does not work?
i've tried using the equation for an answer and it doesn't seem to give me the right answer.