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In a roller coaster the ride includes a vertical drop of 120 m. Suppose that the coaster has a speed of 4.0 m/s at the top of the drop. Neglect frietion, air resistance, and find the speed of the riders at the bottom. The skateboarder in Figure is coasting down a ramp of 30°, weight of the person is 575 N and the frictional force is 125 N. Find the normal force from the surface. Also, determine the net work done by the three forces when the person coasting down for a distance of 9.0 m.

In a roller coaster the ride includes a vertical drop of 120 m. Suppose that the coaster has a speed of 4.0 m/s at the top of the drop. Neglect frietion, air resistance, and find the speed of the riders at the bottom. The skateboarder in Figure is coasting down a ramp of 30°, weight of the person is 575 N and the frictional force is 125 N. Find the normal force from the surface. Also, determine the net work done by the three forces when the person coasting down for a distance of 9.0 m.

College Physics
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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How can I solve 3(b)? 

Question 3: a. Ina roller coaster the ride includes a vertical drop of 120 m. Suppose that the coaster has a speed of 4.0 m/s at the top of the drop. Neglect friction, air resistance, and find the speed of the riders at the bottom. b. The skateboarder in Figure is coasting down a ramp of 30°, weight of the person is 575 N and the frictional force is 125 N. Find the normal force from the surface. Also, determine the net work done by the three forces when the person coasting down for a distance of 9.0 m. 30
Transcribed Image Text:Question 3: a. Ina roller coaster the ride includes a vertical drop of 120 m. Suppose that the coaster has a speed of 4.0 m/s at the top of the drop. Neglect friction, air resistance, and find the speed of the riders at the bottom. b. The skateboarder in Figure is coasting down a ramp of 30°, weight of the person is 575 N and the frictional force is 125 N. Find the normal force from the surface. Also, determine the net work done by the three forces when the person coasting down for a distance of 9.0 m. 30
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