Question: Superman must stop a 1 2 0 - km / h train in 1 5 0 m to keep 1 1 . it from hitting

Superman must stop a 120-km/h train in 150 m to keep
11.
it from hitting a stalled car on the tracks. If the trains mass is 3.6 X 10kg, how much force must he exert? Compare to the weight of the train (give as %). How much force does the train exert on Superman?

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