College Physics (7th Edition)

Published by Pearson
ISBN 10: 0-32160-183-1
ISBN 13: 978-0-32160-183-4

Chapter 3 - Motion in Two Dimensions - Learning Path Questions and Exercises - Exercises - Page 101: 68

Answer

a). $-30 km/hr$ b). $30km/hr$.

Work Step by Step

a). My velocity relative to other car = 90-120= $-30 km/hr$ b). Other car's velocity relative to my car = 120-90= $30km/hr$.
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