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Superman Stopping a train Puntos: 3 Find the speed at which Superman (mass-80.0 ka) must fly into a train (mass = 19780 kg) traveling at 70.0 km/hr to stop it. OO. Tries 0/12 Running into the train at that speed would severely damage both train and passengers, Calculate the minimum time Superman must take to stop the train, if the passengers experience an average horizontal force of 0.450 their own weight. Envlar Arspunstar Tries 0/12 How far does the train then travel while being slowed to a stop? Enver Responsta Tries 0/12