In downhill speed skiing a skier is retarded by both the air drag force on the body and the kinetic frictional force on the skis. Supposethe slope angle is 0 = 42.0°, the snow is dry snow with a coefficient of kinetic friction Hk = 0.0410, the mass of the skier and equipmentis m = 88.0 kg, the cross-sectional area of the (tucked) skier is A = 1.7O m², the drag coefficient is C = 0.150, and the air density is 1.20kg/m3. (a) What is the terminal speed? (b) If a skier can vary C by a slight amount dC by adjusting, say, the hand positions, what is thecorresponding variation in the terminal speed? Give your answer in terms of the given values and dC (need derivative for given values).

In downhill speed skiing a skier is retarded by both the air drag force on the body and the kinetic frictional force on the skis. Suppose the slope angle is 0 = 42.0°, the snow is dry snow with a coefficient of kinetic friction µk = 0.0410, the mass of the skier and equipment is m = 88.0 kg, the cross-sectional area of the (tucked) skier is A = 1.70 m², the drag coefficient is C = 0.150, and the air density is 1.20 kg/m°. (a) What is the terminal speed? (b) If a skier can vary C by a slight amount dC by adjusting, say, the hand positions, what is the corresponding variation in the terminal speed? Give your answer in terms of the given values and dC (need derivative for given values).

In downhill speed skiing a skier is retarded by both the air drag force on the body and the kinetic frictional force on the skis. Suppose the slope angle is 0 = 42.0°, the snow is dry snow with a coefficient of kinetic friction µk = 0.0410, the mass of the skier and equipment is m = 88.0 kg, the cross-sectional area of the (tucked) skier is A = 1.70 m², the drag coefficient is C = 0.150, and the air density is 1.20 kg/m°. (a) What is the terminal speed? (b) If a skier can vary C by a slight amount dC by adjusting, say, the hand positions, what is the corresponding variation in the terminal speed? Give your answer in terms of the given values and dC (need derivative for given values).

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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