The tires of a car make 80 revolutions as the car reduces its speed uniformly from 93.0 km/h to 59.0 km/h. The tires have a diameter of 0.88 m.

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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**Problem Statement:**

The tires of a car make 80 revolutions as the car reduces its speed uniformly from 93.0 km/h to 59.0 km/h. The tires have a diameter of 0.88 m.

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**Part A:**

What was the angular acceleration of the tires?

*Express your answer using two significant figures.*

- Answer: \( \alpha = -2.0 \, \text{rad/s}^2 \)

Feedback: Correct

---

**Part B:**

If the car continues to decelerate at this rate, how much more time is required for it to stop?

*Express your answer to two significant figures and include the appropriate units.*

- Answer: \( t = 18 \, \text{s} \)

Feedback: Correct

---

**Part C:**

If the car continues to decelerate at this rate, how far does it go? Find the total distance.

*Express your answer to three significant figures and include the appropriate units.*

- Input: (No answer provided in the image; box for input shown with spaces for value and units).
Transcribed Image Text:**Problem Statement:** The tires of a car make 80 revolutions as the car reduces its speed uniformly from 93.0 km/h to 59.0 km/h. The tires have a diameter of 0.88 m. --- **Part A:** What was the angular acceleration of the tires? *Express your answer using two significant figures.* - Answer: \( \alpha = -2.0 \, \text{rad/s}^2 \) Feedback: Correct --- **Part B:** If the car continues to decelerate at this rate, how much more time is required for it to stop? *Express your answer to two significant figures and include the appropriate units.* - Answer: \( t = 18 \, \text{s} \) Feedback: Correct --- **Part C:** If the car continues to decelerate at this rate, how far does it go? Find the total distance. *Express your answer to three significant figures and include the appropriate units.* - Input: (No answer provided in the image; box for input shown with spaces for value and units).
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