A train car with a mass of 2.5 x 104 kg traveling north at 1.8 m/s collides and joins with another train car with a mass of 3.5 x 104 kg that was traveling south at 0.78 m/s. What is the velocity (magnitude and direction) of the joined train cars after the collision.
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A train car with a mass of 2.5 x 104 kg traveling north at 1.8 m/s collides and joins with another t...
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