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
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![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]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fff7282a4-d166-49e0-a751-d406be957c8f%2Ff3a4b2e0-ac8a-4604-8325-132d09341f95%2Fkxe3zf_processed.jpeg&w=3840&q=75)
Transcribed Image Text: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]
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