A railroad car of mass 23000 kg moving at initial speed v collides and couples with two coupled railroad cars, each of the same mass as the single car and moving in the same direction at 2.0 m/s. If the speed of the three coupled cars after the collision is 2.67m/s, calculate the final kinetic energy after the collision . A railroad car of mass 23000 kg moving at initial speed v collides and couples with two coupled railroad cars, each of the same mass as the single car and moving in the same direction at 2.0 m/s. If the speed of the three coupled cars after the collision is 2.67m/s, calculate the final kinetic energy after the collision . 2.46 x 105 J 4.2 x 104 J 2.67 x 105 J 3.00 x 104 J
A railroad car of mass 23000 kg moving at initial speed v collides and couples with two coupled railroad cars, each of the same mass as the single car and moving in the same direction at 2.0 m/s. If the speed of the three coupled cars after the collision is 2.67m/s, calculate the final kinetic energy after the collision .
A railroad car of mass 23000 kg moving at initial speed v collides and couples with two coupled railroad cars, each of the same mass as the single car and moving in the same direction at 2.0 m/s. If the speed of the three coupled cars after the collision is 2.67m/s, calculate the final kinetic energy after the collision .
2.46 x 105 J
4.2 x 104 J
2.67 x 105 J
3.00 x 104 J
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