Chapter 2 - Motion Along a Straight Line - Problems - Page 33: 15c

$6m/s$

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, $|v|=|-6m/s|=6m/s$

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