A boat is cruising in a straight line at a constant speed of 2.6 m/s when it is shifted into neutral. After coasting 12 m the engine is engaged again, and the boat resumes cruising at the reduced constant speed of 1.6 m/s. Assuming constant acceleration while coasting, (a) how much time did it take for the boat to coast the 12 m? (b) What was the boat’s acceleration while it was coasting? (c) What was the speed of the boat when it had coasted for 6.0 m? Explain.
A boat is cruising in a straight line at a constant speed of 2.6 m/s when it is shifted into neutral. After coasting 12 m the engine is engaged again, and the boat resumes cruising at the reduced constant speed of 1.6 m/s. Assuming constant acceleration while coasting, (a) how much time did it take for the boat to coast the 12 m? (b) What was the boat’s acceleration while it was coasting? (c) What was the speed of the boat when it had coasted for 6.0 m? Explain.
University Physics Volume 1
18th Edition
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:William Moebs, Samuel J. Ling, Jeff Sanny
Chapter3: Motion Along A Straight Line
Section: Chapter Questions
Problem 11CQ: Is it possible for speed to be constant while acceleration is not zero?
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A boat is cruising in a straight line at a constant speed of 2.6 m/s when it is shifted into neutral. After coasting 12 m the engine is engaged again, and the boat resumes cruising at the reduced constant speed of 1.6 m/s. Assuming constant acceleration while coasting, (a) how much time did it take for the boat to coast the 12 m? (b) What was the boat’s acceleration while it was coasting? (c) What was the speed of the boat when it had coasted for 6.0 m? Explain.
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