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OpenStudy (anonymous):
A freight train car with a mass of 1.2 × 104 kilograms, travelling with a velocity of 23 meters/second, collides with a stationary freight train car of equal mass. What is the momentum of the system after the collision? Select one of the options below as your answer: A. 1.2 × 105 kilogram meters/second B. 1.4 × 105 kilogram meters/second C. 2.4 × 104 kilogram meters/second D. 2.8 × 105 kilogram meters/second please help -.-
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OpenStudy (anonymous):
d
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