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almost__overnow
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A railroad diesel engine weights 4 times as much as a flatear. If a diesel coasts a 5km/h into a flatear that is initally at rest. How fast do the two coast after they couple together?
The actual masses do not matter. All that matters is that the masses have a known ratio. If you do the problem using m for the mass of the flatear and 4m for the engine the m will divide out of the problem. There is no way for you to determine the value of m.almost__overnow said:okay wait one more question how do you find the kg since i already have the speed? thanks
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