College Physics (4th Edition)

Published by McGraw-Hill Education
ISBN 10: 0073512141
ISBN 13: 978-0-07351-214-3

Chapter 3 - Multiple-Choice Questions - Page 110: 24


The sign of $v_x$ is +

Work Step by Step

The net force is in the +x-direction. Therefore, the acceleration $a_x$ is in the +x-direction. Since the change in speed is increasing, the velocity $v_x$ must be in the same direction as $a_x$. Therefore, the sign of $v_x$ is +.
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