College Physics (4th Edition)

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

Chapter 3 - Problems: 1

Answer

The vertical components cancel when B is subtracted from A. The direction of the horizontal component of B is reversed due to the subtraction, and so the vector resulting from the subtraction is in the direction of the horizontal component of A; that is, to the left. The horizontal components of each vector have the same magnitude, which is about 3.9 cm; so the magnitude of D is about 7.9 cm.

Work Step by Step

The vertical components cancel when B is subtracted from A. The direction of the horizontal component of B is reversed due to the subtraction, and so the vector resulting from the subtraction is in the direction of the horizontal component of A; that is, to the left. The horizontal components of each vector have the same magnitude, which is about 3.9 cm; so the magnitude of D is about 7.9 cm.
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