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September 30, 2014

Homework Help: college physics

Posted by john on Sunday, April 29, 2012 at 4:59pm.

Superman must stop a 190-km/h train in 180m to keep it from hitting a stalled car on the tracks.

part a)If the train's mass is 3.810^5kg , how much force must he exert (find the magnitude)?

part b)Compare to the weight of the train (give as %).

partc) How much force(in magnitude) does the train exert on Superman?

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