3. A car travels three-quarters of the way around a circle of radius 20 m in a time of 3 s at constant speed. The initial velocity is west and the final velocity is south. (a) Calculate the average velocity for this trip. (b) Calculate the car's average acceleration during this 3 s. (c) Explain how a car moving a constant speed has a nonzero average acceleration. [Answer: (a) 9.4 m/s at 45° north of east (b) 15 m/s² at 45° south of east]

3. A car travels three-quarters of the way around a circle of radius 20 m in a time of 3 s at constant speed. The initial velocity is west and the final velocity is south. (a) Calculate the average velocity for this trip. (b) Calculate the car's average acceleration during this 3 s. (c) Explain how a car moving a constant speed has a nonzero average acceleration. [Answer: (a) 9.4 m/s at 45° north of east (b) 15 m/s² at 45° south of east]

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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