Essential University Physics: Volume 1 (3rd Edition)

Published by Pearson
ISBN 10: 0321993721
ISBN 13: 978-0-32199-372-4

Chapter 17 - For Thought and Discussion - Page 313: 4


Average velocity increases as well.

Work Step by Step

In gases, the molecules move around randomly in many directions, causing them to have a much higher average speed than average velocity. However, there can still be a net direction of the molecules. Therefore, since the molecules are moving faster on average, they will have a higher average velocity if the particles' net position is changing. If the particles are in a container so that the net position of the particles is not changing, the average velocity will be zero regardless.
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