College Physics (4th Edition)

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

Chapter 3 - Problems - Page 111: 7


(a) 44.8 km (b) The additional distance is 16.2 km

Work Step by Step

(a) We can find the magnitude of the displacement: $\sqrt{(39~km)^2+(22~km)^2} = 44.8~km$ (b) The total distance when traveling from Killarney to Mallow and then to Cork is $39~km + 22~km$ which is $61~km$. We can find the additional distance traveled: $61~km-44.8~km = 16.2~km$
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