Answer
7.5 km, and 0.5 km.
Work Step by Step
If the two vectors point in the same direction, their sum will have a length of 7.5 km.
If the two vectors point in opposite directions, the magnitude of their sum will be a minimum, 0.5 km.
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 3 - Kinematics in Two Dimensions; Vectors - Questions - Page 67: 7
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