College Physics (7th Edition)

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

Chapter 2 - Kinematics: Description of Motion - Learning Path Questions and Exercises - Exercises - Page 63: 49

Answer

The car will NOT stop before hitting the child.

Work Step by Step

Distance traversed in first 0.5 s $= 11.11\times0.5m=5.55m$ So, remaining distance = $13-5.55=7.45m$ From problem 48, we see that S=7.71m is traversed till the car stops, which is greater than 7.45m, so the car will NOT stop before hitting the child.
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