Another concept of physics in skiing is projectile motion when a skier is thrown off of a jump with great amounts of momentum. Skiers launch off of jumps in perfect parabolic paths with momentum due to their mass times their velocity. When a skier is in mid air or just skiing, there is a lot of air resistance that can effect the flight of a skier after launching off of a jump.
Some more talented trick skiers spin and do flips spinning every which way. It looks like they are defying gravity and going against all laws of physics but they are only timing their continuous spin. They can tweak the spin to turn different ways. All laws of physics still are applying, theses skiers are just good at looking smooth.
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