Answer
$6m/s$
Work Step by Step
Using the results of (a) and (b):
At t=1 s, the VELOCITY is $v(1)=-6m/s$
The instantaneous SPEED of the particle is the magnitude of velocity, $|v|$.
Therefore, $|v|=|-6m/s|=6m/s$
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 2 - Motion Along a Straight Line - Problems - Page 33: 15c
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