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: 62


It is a good deal, because the other student will NOT be able to grab the dollar bill due to the reaction time.

Work Step by Step

$S=ut+\frac{1}{2}gt^{2}$ $S=0+0.5\times 9.8\times 0.2^{2}=0.196\,m=19.6\,cm$ which is greater than 15.7 cm, the dollar bill length. So, the fellow student will NOT be able to grab it.
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