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July 3, 2015

Homework Help: physics

Posted by scott on Saturday, November 3, 2012 at 4:06pm.

A freight train has a mass of 3.1 107 kg.
If the locomotive can exert a constant pull
of 4.9 105 N, how long would it take to
increase the speed of the train from rest to
71.9 km/h? Disregard friction.

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