Question: Superman must stop a 1 3 0 - km / hkm / h train in 1 4 0 mm to keep it from hitting a

Superman must stop a 130-km/hkm/h train in 140 mm to keep it from hitting a stalled car on the tracks. The train's mass is 3.6105 kgkg.
Determine the force that must be exerted on the train.
Compare the magnitudes of the force exerted on the train and the weight of the train (give as %%).

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