Answer
0.14 hours.
Work Step by Step
Rearrange the average velocity equation.
$$\Delta t = \frac{3.5 km}{25 km/h} = 0.14 hours$$
Physics: Principles with Applications (7th Edition)
by Giancoli, Douglas C.
Published by
Pearson
ISBN 10:
0-32162-592-7
ISBN 13:
978-0-32162-592-2
Chapter 2 - Describing Motion: Kinematics in One Dimension - Problems - Page 43: 5
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