Answer
$ab$
Work Step by Step
Recall,
$a\times b=absin\theta$
Thus, we obtain
$
=absin(90°)=ab$
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: 66g
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