I understand that it is required that a user have attempted the problems before posting as this is not a place where people will do your homework for you. I'm a relatively good physics student, and was just handed a 30 problem packet to complete. I've spent the majority of my weekend figuring these problems out, and I'm left with 2 problems that I'm having a great deal of trouble with. The problems are:(adsbygoogle = window.adsbygoogle || []).push({});

A skier starts from rest at the top of a hill. The skier coasts down the hill and up a second hill. The crest of the second hill is circular with a radius of r=36 m. Neglect friction and air resistance. What is the height of the first hill such that the skier just loses contact with the snow at the crest of the second hill?

I've figured out that to figure out this problem, you must have a strong bearing on the concepts of centripetal acceleration/force. I don't entirely grasp those concepts. I'm having a hard time even getting a grasp on this problem.

Second:

An extreme skier, starting from rest, coasts down a mountain that makes an angle of 25.0 degrees with the horizontal. THe coefficient of kinetic friction between her skis and the snow is 0.200. She coasts for a distance of 10.4 m before coming to the edge of a cliff. Without slowing down, she skis off and lands downhill at a point whose vertical distance is 3.50 m below the edge. How fast is she traveling just before she lands?

Again, I'm aware this is not really a "homework help" place. But please realize that I have attempted both problems - and failed miserably. The other problems have obviously tired my brain. ANY help would be very much appreciated. Please~. :)

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# Homework Help: Skiers - Who Needs 'em?

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