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Car A of mass 1,274 kg is traveling east at 13.2 m/s when it collides with...

Car A of mass 1,274 kg is traveling east at 13.2 m/s when it collides with car B of mass 1,596 kg which is traveling at 14.6 m/s at 71.4 degrees N of W. The two cars stick together after the collision. What is the magnitude of the final velocity of the cars?

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