Physics Technology Update (4th Edition)

Published by Pearson
ISBN 10: 0-32190-308-0
ISBN 13: 978-0-32190-308-2

Chapter 2 - One-Dimensional Kinematics - Conceptual Questions: 9

Answer

For a straight-line motion at constant speed.

Work Step by Step

Example: I am driving my car in a straight-line. My speed is 30 m/s and constant. Starting at the origin: For t = 1 s, x = 30m. For t = 2 s, x = 60 m. And so on. This way, my average and instantaneous velocity are the same. If I am not driving my car in a straight-line the direction is changing. But, velocity is a vector and, even if the speed of my car is constant, my velocity is changing.
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