College Physics (4th Edition)

Published by McGraw-Hill Education
ISBN 10: 0073512141
ISBN 13: 978-0-07351-214-3

Chapter 1 - Section 1.5 - Units - Practice Problem: 1.6


(a) $v = 35.6 ~m/s$ (b) $v = 80~mph$

Work Step by Step

(a) $v = (128 ~km/h)(\frac{1000 ~m}{1 ~km})(\frac{1 ~h}{3600 ~s}) = 35.6 ~m/s$ (b) $v = (128 ~km/h)(\frac{1 ~mi}{1.6 ~km}) = 80~mph$
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