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April 20, 2014

Homework Help: Physics

Posted by Mark on Tuesday, October 9, 2012 at 9:22pm.

A freight train has a mass of 1.5*10^7 kg. If the locomotive can exert constant pull of 4.5 *10^5N, how long does it take to increase the speed of the train from res to 80.0km/hr?

a)467s b) 444s c)527s d) 425s e) 496s

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