I don't understand how to do any of the practice problems of Physics Fundamentals Mechanics Week 4 Homework, except numbers 5,6, and 9, which were pretty straightforward. I don't think we learned how to do any problems involving inclines and frictions, nor did we go over any formulas, unless I'm forgetting them.

For example, how would you do #1?: A skier traveling at 34 m/s encounters a 13.4 degree slope. If you could ignore friction, to the nearest meter, how far up the hill does he go?                                      

Did we learn formulas for this?

#3: You have a mass of 66 kg and are on a 52-degree slope hanging on to a cord with a breaking strength of 163 newtons. What must be the coefficient of static friction to 2 decimal places between you and the surface for you to be saved from the fire?

In this problem, is there a normal force acting on the person? If so, how would it be calculated?

Can someone help? Thanks!