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Back to 8.3 Conservation of Momentum

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Train cars are coupled together by being bumped into one another. Suppose two loaded train cars are moving toward one another, the first having a mass of 150,000 kg and a velocity of 0.300 m/s, and the second having a mass of 110,000 kg and a velocity of −0.120 m/s- 0 . \text{120 m}/\text{s}. (The minus indicates direction of motion.) What is their final velocity?

OpenStax College Physics 2e, 8.3 Conservation of Momentum, exercise 14

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Adapted from College Physics © 2022 Rice University. Licensed under CC BY 4.0. Sources: College Physics 2e, College Physics for AP® Courses 2e. Imported at revision f98d7a7.