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A ball moves in a straight line (the x-axis). The graph in

University Physics | 13th Edition | ISBN: 9780321675460 | Authors: Hugh D. Young, Roger A. Freedman ISBN: 9780321675460 31

Solution for problem 9E Chapter 2

University Physics | 13th Edition

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University Physics | 13th Edition | ISBN: 9780321675460 | Authors: Hugh D. Young, Roger A. Freedman

University Physics | 13th Edition

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Problem 9E

A ball moves in a straight line (the x-axis). The graph in Fig. E2.9 shows this ball’s velocity as a function of time. (a) What are the ball’s average speed and average velocity during the first 3.0 s? (b) Suppose that the ball moved in such a way that the graph segment after 2.0 s was -3.0 m/s instead of +3.0 m/s. Find the ball’s average speed and average velocity in this case.

Step-by-Step Solution:

Step 1 of 4

a)

Average speed, s = Total distance travelled by the object/Total time.

In this problem, the velocity of the ball in first two seconds is, .

Therefore, the total distance travelled by the object at first two seconds,

 

The total distance travelled by the object in between 2nd and 3rd second is,  

 

Therefore, the total distance travelled by the object,

Total time taken,  

Average speed of the ball, s = 7 m / 3 s = 2.33 m/s

 

Step 2 of 3

Chapter 2, Problem 9E is Solved
Step 3 of 3

Textbook: University Physics
Edition: 13
Author: Hugh D. Young, Roger A. Freedman
ISBN: 9780321675460

The full step-by-step solution to problem: 9E from chapter: 2 was answered by , our top Physics solution expert on 05/06/17, 06:07PM. Since the solution to 9E from 2 chapter was answered, more than 6585 students have viewed the full step-by-step answer. This full solution covers the following key subjects: ball, average, velocity, speed, graph. This expansive textbook survival guide covers 26 chapters, and 2929 solutions. The answer to “?A ball moves in a straight line (the x-axis). The graph in Fig. E2.9 shows this ball’s velocity as a function of time. (a) What are the ball’s average speed and average velocity during the first 3.0 s? (b) Suppose that the ball moved in such a way that the graph segment after 2.0 s was -3.0 m/s instead of +3.0 m/s. Find the ball’s average speed and average velocity in this case.” is broken down into a number of easy to follow steps, and 73 words. University Physics was written by and is associated to the ISBN: 9780321675460. This textbook survival guide was created for the textbook: University Physics, edition: 13.

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A ball moves in a straight line (the x-axis). The graph in