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

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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