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May 28, 2015

Homework Help: physics

Posted by Jayde Larson on Monday, February 4, 2013 at 11:07pm.

A railroad car with a mass of 1.81 104 kg moving at 3.04 m/s joins with two railroad cars already joined together, each with the same mass as the single car and initially moving in the same direction at 1.32 m/s.
What is the decrease in kinetic energy during the collision?

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