Fundamentals of Physics Extended (10th Edition)

Published by Wiley
ISBN 10: 1-11823-072-8
ISBN 13: 978-1-11823-072-5

Chapter 2 - Motion Along a Straight Line - Problems - Page 33: 11


128 km/hr

Work Step by Step

The time required to reach the interview is 3hours 15minutes. Let the least speed in the remaining distance be $v$. We have: $100/100 +40/40 + 160/v = 3.25 hr$ $160/v = 1.25 hr$ $v = 128 km/hr$
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