Physics, 06.03.2020 02:04 chandlern

A 13,500 kg railroad freight car travels on a level track at a speed of 4.5 m/s. It collided and coupled with a 25,000 kg second car, initially at rest and with brakes released. What is the speed of the two cars after collision

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A 13,500 kg railroad freight car travels on a level track at a speed of 4.5 m/s. It collided and cou...