Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (3rd Edition)

Published by Pearson
ISBN 10: 0321740904
ISBN 13: 978-0-32174-090-8

Chapter 9 - Impulse and Momentum - Exercises and Problems: 18

Answer

The speed of the Volkswagen should be 2 mph

Work Step by Step

In order for both cars to come to a halt, the magnitude of the Volkwagen's momentum $p_v$ should be equal to the magnitude of the Cadillac's momentum $p_c$. We can equate the magnitudes of the momenta to find the required speed $v$ of the Volkswagen. $p_v = p_c$ $(1000~kg)~v = (2000~kg)(1~mph)$ $v = 2~mph$ The speed of the Volkswagen should be 2 mph.
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