Physics, 03.08.2019 04:30 keidora

A12500 kg railroad car travels alone on a level frictionless track with a constant speed of 17.0 m/s. a 5800 kg load, initially at rest, is dropped onto the car. what will be the car's new speed?

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A12500 kg railroad car travels alone on a level frictionless track with a constant speed of 17.0 m/s...