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Asked Feb 7, 2020
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Superman must stop a 130-km/hkm/h train in 110 mm to keep it from hitting a stalled car on the tracks. The train's mass is 3.6 ×× 10kgkg.

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 %%).

How much force does the train exert on Superman?

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