College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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A train 400 m long is moving on a straight track with a speed of 84.8 km/h. The engineer applies the brakes at a crossing, and later the last car passes the crossing with a speed of 16.2 km/h. Assuming constant acceleration, determine how long the train blocked the crossing. Disregard the width of the crossing.
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