A 12600-kg railroad car travels alone on a level
A 12,600-kg railroad car travels alone on a level frictionless track with a constant speed of 15.8 m/s. A 5350-kg load, initially at rest, is dropped onto the car. What will be the car's new speed?
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a 12600-kg railroad car travels alone on a level frictionless track with a constant speed of 158 ms a 5350-kg load
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