College Physics
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Two identical freight cars roll without friction towards each other, in opposite directions, on a level track. One car rolls at 3.4 m/s. After the cars collide, they couple and roll together with a speed of 2.2 m/s. The speed of the second car before the collision is _______ m/s (to two significant figures).

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