A 20-Mg train is traveling at a speed of 50 m/s. But the driver noticed that the bridge 300-m ahead is missing. At once, he pulls the break, thus applying a frictional resistance of Ff = 1000 N. At the same time Super Botting pushes back the train with a force of Fs = [312d+100] N, where d is the distance that the train travels before stopping. Determine the stopping distance d, and mention whether or not Super Botting would be able to save the train v = 50 m/s Fs

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Conservation of Energy

In physics, the rule of the conservation of energy states that energy doesn’t disappear from the atmosphere; instead, it changes its form from one type to another. Energy is one of the most important physical quantities in nature, and it cannot be created or destroyed — only transformed.