Physics Technology Update (4th Edition)

Published by Pearson
ISBN 10: 0-32190-308-0
ISBN 13: 978-0-32190-308-2

Chapter 2 - One-Dimensional Kinematics - Problems and Conceptual Exercises - Page 49: 16


The average speed of my hair is $6.41\times10^{-9}cm/s$

Work Step by Step

My hair grows about 0.10 m in 6 months = 180 days. $180 days = (180 days)(\frac{24 h}{1 day})(\frac{3600s}{1h})=1.56\times10^{7}s$ $Average$ $speed=\frac{distance}{elapsed time}=\frac{0.10m}{1.56\times10^{7}s}=6.41\times10^{-9}m/s$
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