Tuesday
December 6, 2016

Homework Help: physics!

Posted by monica on Wednesday, January 5, 2011 at 6:43pm.

A freight train has a mass of 1.8 × 10
7
kg.
If the locomotive can exert a constant pull
of 6.2×10
5
N, how long does it take to increase
the speed of the train from rest to 70 km/h?
Answer in units of min.

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