Essential University Physics: Volume 1 (3rd Edition)

Published by Pearson
ISBN 10: 0321993721
ISBN 13: 978-0-32199-372-4

Chapter 13 - Exercises and Problems: 37

Answer

.248 seconds

Work Step by Step

We know the following equation: $\frac{1}{2}=e^{\frac{-bt}{2m}}$ Plugging in the value for $b/2m$ and simplifying gives: $\frac{1}{2}=e^{-2.8t} \\ t = \frac{ln(.5)}{-2.8}=\fbox{.248 seconds}$
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