Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (4th Edition)

Published by Pearson
ISBN 10: 0133942651
ISBN 13: 978-0-13394-265-1

Chapter 1 - Concepts of Motion - Exercises and Problems - Page 31: 59

Answer

The 40-meter race begins and the biker starts peddling. In the first 10 seconds, they cover 10 meters at a constant pace. Then, the biker speeds up and covers another 30 meters in 10 seconds. After crossing the 40-meter line the bike comes to a quick stop.

Work Step by Step

The first line from 0 seconds to 10 seconds depicts a movement of 10 meters. The second line from 10 seconds to 20 seconds, is slanted more and covers a distance of 30 meters (y-axis). Between 20 seconds and 30 seconds, there is no change in distance as shown with the horizontal line.
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