Give two reasons why skiers typically assume a crouching position when going down a slope. (Select all that apply.) In the crouching position there is less air resistance. Crouching lowers the skier's center of mass, making it easier to balance Crouching decreases the mass of the skier. The acceleration of gravity is increased by crouching. Crouching decreases the skier's inertia. PRACTICE IT Use the worked example above to help you solve this problem. A skier starts from rest at the top of a frictionless incline of height 20.0 m, as shown in the figure. At the bottom of the incline, the skier encounters a horizontal surface where the coefficient of kinetic friction between skis and snow is 0.199. Neglect air resistance. (a) Find the skier's speed at the bottom. m/s (b) How far does the skier travel on the horizontal surface before coming to rest? EXERCISE HINTS: GETTING STARTED I'M STUCK! Use the values from PRACTICE IT to help you work this exercise. Find the horizontal distance the skier travels before coming to rest of the incline also has a coefficient of kinetic friction equal to 0.199. Assume that 8 - 20.00