Essential University Physics: Volume 1 (3rd Edition)

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

Chapter 6 - For Thought and Discussion: 2

Answer

Perpendicular

Work Step by Step

Scalar products measure how parallel two vectors are. Thus, if the scalar product is 0 and neither of the vectors are 0, they must be completely not parallel, which means they are perpendicular.
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