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A freight car of mass 1.0 10 5 kg travels at 3.0 m/s and collides with a stationary freight car of mass 2.0 10 5

A freight car of mass 1.0 10⁵ kg travels at 3.0 m/s and collides with a stationary freight car of mass 2.0 10⁵ kg on a horizontal track. The two cars lock and roll together after impact in the initial direction of the first freight car. a. Find the velocity of the two cars after the collision. b. What type of collision occurred? Explain.

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