Current Attempt in Progress A roller coaster (450 kg) moves from A (1.77 m above the ground) to B (25.7 m above the ground). Two non-conservative forces are present: friction does -1.29 x 104 J of work on the car, and a chain mechanism does +4.73 x 104 J of work to help the car up a long climb. What is the change in the car's kinetic energy KE - KE from A to B? Number i Units Save for Later Attempts: 0 of 3 used Submit Answer

Current Attempt in Progress A roller coaster (450 kg) moves from A (1.77 m above the ground) to B (25.7 m above the ground). Two non-conservative forces are present: friction does -1.29 x 104 J of work on the car, and a chain mechanism does +4.73 x 104 J of work to help the car up a long climb. What is the change in the car's kinetic energy KE - KE from A to B? Number i Units Save for Later Attempts: 0 of 3 used Submit Answer

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter6: Energy Of A System

Section: Chapter Questions

Problem 3OQ

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A boy starts at rest and slides down a frictionless slide as in Figure P5.64. The bottom of the track is a height h above the ground. The boy then leaves the track horizontally, striking the ground a distance d as shown. Using energy methods, determine the initial height H of the boy in terms of h and d. Figure P5.64
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