A 52 kg skier is at the top of a slope, as in the

figure. At the initial point A, the skier is 17.7
m vertically above the final point B.
The acceleration of gravity is 9.81 m/s2 .

Find the difference in gravitational po-
tential energy associated with the skier at the
points A and B if the zero level for gravita-
tional potential energy is at point B.
Answer in units of J.

I answered this already. This is the last post of yours that I will answer.