Physics: Principles with Applications (7th Edition)

Published by Pearson
ISBN 10: 0-32162-592-7
ISBN 13: 978-0-32162-592-2

Chapter 3 - Kinematics in Two Dimensions; Vectors - Problems - Page 71: 41

Answer

23.1 seconds.

Work Step by Step

The relative speed of approach of the two head-on planes is 2(780 km/h) = 1560 km/h. If no action were taken, they would collide in a time of $t = \frac{10.0 km}{1560 km/h} = 0.00641 hours$, which is approximately 23.1 seconds.
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