A railroad car with a mass of 14,000 kg collides and couples with a second...
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Physics
A railroad car with a mass of 14,000 kg collides and couples with a second car of mass 16,000kg that is initially at rest. The first car is moving with a speed of 17 m/s prior to the collision.(a) What is the initial momentum of the first car?(b) If external forces can be ignored, what is the final velocity of the two railroad cars after they couple?
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