# Answer to Question #31592 in Mechanics | Relativity for Chelsea

Question #31592

A railroad car of mass M moving at a speed v1 collides and couples with two coupled railroad cars, each of the same mass M and moving in the same direction at a speed v2.

(b) How much kinetic energy is lost in the collision? Answer in terms of M, v1, and v2.

(b) How much kinetic energy is lost in the collision? Answer in terms of M, v1, and v2.

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