College Physics
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Concept explainers

Angular speed, acceleration and displacement
Angular acceleration is defined as the rate of change in angular velocity with respect to time. It has both magnitude and direction. So, it is a vector quantity.
Angular Position
Before diving into angular position, one should understand the basics of position and its importance along with usage in day-to-day life. When one talks of position, it’s always relative with respect to some other object. For example, position of earth w…
Question

The tires of a car make 94 revolutions as the car reduces its speed uniformly from 93.0 km/h to 56.0 km/h. The tires have a diameter of 0.80 m.

What was the angular acceleration of the tires?
 
If the car continues to decelerate at this rate, how much more time is required for it to stop?
 
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