Answer
$-46 \ m/s$
Work Step by Step
We know the following equation for elastic collisions:
$v_{1f}=\frac{m_1-m_2}{m_1+m_2}v_{1i}+\frac{2m_2}{m_1+m_2}v_{2i}$
$v_{1f}=-v_{1i}+2v_{2i}$
$v_{1f}=-18+2(-14)=-46 \ m/s$
Essential University Physics: Volume 1 (4th Edition)
by Wolfson, Richard
Published by
Pearson
ISBN 10:
0-134-98855-8
ISBN 13:
978-0-13498-855-9
Chapter 9 - Exercises and Problems - Page 171: 29
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