22. A 200 kg roller coaster begins from rest. The ride reaches a maximum height of 30 m and a top speed of 30 m/s. 40 seconds after starting, the roller coaster is moving at 5.0 m/s on a section of track that is 2.5 m above the starting height. There are no elastic (spring) forces involved. For the segment of motion described, the work done by gravity on the roller coaster is and the work done by all non-conservative forces combined is a) 5,000 J, 2,500 J b) -5,000 J, 2,500 J c) 5,000 J, -2,500 J d) -5,000 J, -2,500 J e) none of the above are correct
22. A 200 kg roller coaster begins from rest. The ride reaches a maximum height of 30 m and a top speed of 30 m/s. 40 seconds after starting, the roller coaster is moving at 5.0 m/s on a section of track that is 2.5 m above the starting height. There are no elastic (spring) forces involved. For the segment of motion described, the work done by gravity on the roller coaster is and the work done by all non-conservative forces combined is a) 5,000 J, 2,500 J b) -5,000 J, 2,500 J c) 5,000 J, -2,500 J d) -5,000 J, -2,500 J e) none of the above are correct
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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Transcribed Image Text:22. A 200 kg roller coaster begins from rest. The ride reaches a maximum height of 30 m
and a top speed of 30 m/s. 40 seconds after starting, the roller coaster is moving at 5.0 m/s
on a section of track that is 2.5 m above the starting height. There are no elastic (spring)
forces involved. For the segment of motion described, the work done by gravity on the roller
coaster is
and the work done by all non-conservative forces combined is
a) 5,000 J, 2,500 J
b) -5,000 J, 2,500 J
c) 5,000 J, -2,500 J
d) -5,000 J, -2,500 J
e) none of the above are correct
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