Engineering Mechanics: Statics & Dynamics (14th Edition)

Published by Pearson
ISBN 10: 0133915425
ISBN 13: 978-0-13391-542-6

Chapter 12 - Kinematics of a Particle - Section 12.2 - Rectilinear Kinematics: Continuous Motion - Problems - Page 17: 11


Average Velocity: 0.222 m/s Average Speed: 2.22 m/s

Work Step by Step

Average Velocity: $\Delta s=s_C-s_A=-6-(-8)=2$ $v_{avg}=\frac{\Delta s}{\Delta t}=\frac{2}{4+5}=0.222$ m/s Average Speed: $s_{A \rightarrow B}=8+3=11$ $s_{B \rightarrow C}=3+6=9$ $s_{tot}=11+9=20$ $(v_{speed})_{avg}=\frac{s_{tot}}{\Delta t}=\frac{20}{4+5}=2.22$ m/s
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