Find the speed and kinetic energy of the cars

Reference no: EM13551089

A railroad freight car weighing 42 tons and traveling 10 m/s overtakes another freight car weighing 20 tons and traveling at 4.5 m/s in the same direction as the first. a. Find the speed and kinetic energy of the cars if they collide and couple together. b. If the collision is elastic, they do not couple but separate after collision. What are their speeds?

Reference no: EM13551089

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