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KE₁ Vi S 35° V₁ = ? 2.5 m A 60.0-kg skier with an initial speed of 12.0 m/s coasts up a 2.50-m-high rise as shown in figure above. We want to find her final speed vƒ at the top, given that the kinetic frictional force between her skis and the snow is FR = 38.5 N. We will ignore any friction from the air. a) Given the 2.50m rise and the 35.0° angle of the slope, compute the length s traveled by the skier. (1 point) b) What are the forces acting on the skier? Which are conservative and which are not? (1 points) c) Compute the work done by the frictional force during the displacement s. (1 points) d) Using the work-energy theorem find the final speed of the skier. For that, first compute the initial kinetic energy of the skier KE,. Then the change in the potential energy from h=0 to h=2.5m. Finally, using the work-energy theorem compute the final kinetic energy of the skier KE. From the final kinetic energy obtain the final velocity Vf. (4 points)

KE₁ Vi S 35° V₁ = ? 2.5 m A 60.0-kg skier with an initial speed of 12.0 m/s coasts up a 2.50-m-high rise as shown in figure above. We want to find her final speed vƒ at the top, given that the kinetic frictional force between her skis and the snow is FR = 38.5 N. We will ignore any friction from the air. a) Given the 2.50m rise and the 35.0° angle of the slope, compute the length s traveled by the skier. (1 point) b) What are the forces acting on the skier? Which are conservative and which are not? (1 points) c) Compute the work done by the frictional force during the displacement s. (1 points) d) Using the work-energy theorem find the final speed of the skier. For that, first compute the initial kinetic energy of the skier KE,. Then the change in the potential energy from h=0 to h=2.5m. Finally, using the work-energy theorem compute the final kinetic energy of the skier KE. From the final kinetic energy obtain the final velocity Vf. (4 points)

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter5: Energy
Section: Chapter Questions
Problem 75AP: A ski jumper starts from rest 50.0 m above the ground on a frictionless track and flies off the...
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KE₁ Vi S 35° V₁ = ? 2.5 m A 60.0-kg skier with an initial speed of 12.0 m/s coasts up a 2.50-m-high rise as shown in figure above. We want to find her final speed vƒ at the top, given that the kinetic frictional force between her skis and the snow is FR = 38.5 N. We will ignore any friction from the air. a) Given the 2.50m rise and the 35.0° angle of the slope, compute the length s traveled by the skier. (1 point) b) What are the forces acting on the skier? Which are conservative and which are not? (1 points) c) Compute the work done by the frictional force during the displacement s. (1 points) d) Using the work-energy theorem find the final speed of the skier. For that, first compute the initial kinetic energy of the skier KE,. Then the change in the potential energy from h=0 to h=2.5m. Finally, using the work-energy theorem compute the final kinetic energy of the skier KE. From the final kinetic energy obtain the final velocity Vf. (4 points)
Transcribed Image Text:KE₁ Vi S 35° V₁ = ? 2.5 m A 60.0-kg skier with an initial speed of 12.0 m/s coasts up a 2.50-m-high rise as shown in figure above. We want to find her final speed vƒ at the top, given that the kinetic frictional force between her skis and the snow is FR = 38.5 N. We will ignore any friction from the air. a) Given the 2.50m rise and the 35.0° angle of the slope, compute the length s traveled by the skier. (1 point) b) What are the forces acting on the skier? Which are conservative and which are not? (1 points) c) Compute the work done by the frictional force during the displacement s. (1 points) d) Using the work-energy theorem find the final speed of the skier. For that, first compute the initial kinetic energy of the skier KE,. Then the change in the potential energy from h=0 to h=2.5m. Finally, using the work-energy theorem compute the final kinetic energy of the skier KE. From the final kinetic energy obtain the final velocity Vf. (4 points)
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