A train car, initially traveling at 40 m/s, approaches 3 identical coupled train cars, which are initially at rest. The moving train car hitches to the stationary train cars, and they all move off together, What is their final speed? O 40 m/s O 30 m/s 20 m/s 10 m/s Om/s

Glencoe Physics: Principles and Problems, Student Edition
1st Edition
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Paul W. Zitzewitz
Chapter9: Momentum And Its Conservation
Section: Chapter Questions
Problem 4STP
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A train car, initially traveling at 40 m/s, approaches 3 identical coupled train cars, which are initially
at rest. The moving train car hitches to the stationary train cars, and they all move off together. What
is their final speed?
O 40 m/s
O 30 m/s
O 20 m/s
10 m/s
O Om/s
Transcribed Image Text:A train car, initially traveling at 40 m/s, approaches 3 identical coupled train cars, which are initially at rest. The moving train car hitches to the stationary train cars, and they all move off together. What is their final speed? O 40 m/s O 30 m/s O 20 m/s 10 m/s O Om/s
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