Answer
$+y$
Work Step by Step
A positive scalar will just change the magnitude of $b$, not the direction.
Fundamentals of Physics Extended (10th Edition)
by Halliday, David; Resnick, Robert; Walker, Jearl
Published by
Wiley
ISBN 10:
1-11823-072-8
ISBN 13:
978-1-11823-072-5
Chapter 3 - Vectors - Problems - Page 60: 66a
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