8. 9. A speedboat moving at 30 m/s approaches a no-wake buoy marker 100 m ahead. The pilot slows the boat with a constant acceleration of -3.50 m/s² by reducing the throttle. a. How long does it take the boat to reach the buoy? b. What is the velocity of the boat when it reaches the buoy? A 75-m-long train begins uniform acceleration from rest. The front of the train has speed of 18 m/s when it passes a railway worker who is standing 180 m from where the front of the train started. What will be the speed of the last-train-carriage as it passes the worker? 75 m v = 18 m/s

8. 9. A speedboat moving at 30 m/s approaches a no-wake buoy marker 100 m ahead. The pilot slows the boat with a constant acceleration of -3.50 m/s² by reducing the throttle. a. How long does it take the boat to reach the buoy? b. What is the velocity of the boat when it reaches the buoy? A 75-m-long train begins uniform acceleration from rest. The front of the train has speed of 18 m/s when it passes a railway worker who is standing 180 m from where the front of the train started. What will be the speed of the last-train-carriage as it passes the worker? 75 m v = 18 m/s

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 64P: An express train passes through a station. It enters with an initial velocity of 22.0 m/s and...

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