Physics, 05.07.2019 04:10 YRNlightskin3360

A1000 kg train car traveling at 12 m/s on a level track has 400 kg of sand dumped, vertically, into it. what is the final speed of the train car after the sand is dumped into it? ignore friction

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A1000 kg train car traveling at 12 m/s on a level track has 400 kg of sand dumped, vertically, into...