**87. Suppose the skateboarder shown in the drawing for Problem 38reaches a highest point of h = 1.80 m above the right side of the semi-circular ramp. He then makes an incomplete midair turn and ends upsliding down the right side of the ramp on his back. When the skate-boarder reaches the bottom of the ramp, his speed is 6.40 m/s. Theskateboarder's mass is 61.0 kg, and the radius of the semicircular rampis 2.70 m. What is the average frictional force exerted on the skate-boarder by the ramp?

Answered: **87. Suppose the skateboarder shown in…

Physics for Scientists and Engineers with Modern Physics

10th Edition

ISBN:9781337553292

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter9: Linear Momentum And Collisions

Section: Chapter Questions

Problem 42AP

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