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OpenStudy (anonymous):

Two cars collide at an intersection. One car has a mass of 1300 kg and is moving 12 m/s to the north, while the other has a mass of 1400 kg and is moving 11 m/s to the south. What is their combined momentum? A. 31,000 kgm/s south B. 200 kgm/s north C. 200 kgm/s south D. 31,000 kgm/s north

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