A train has a maximum speed 20m/s which it can achieve at an acceleration of 0.25m/s with its brake fully applied, the train has a deceleration of 0.5m/s². What is the shortest time the train can travel between two stations 800m apart if it's stops at both stations?.
"t=\\frac{v}{2a_1}+\\frac v{2a_2}+\\frac sv=100~s."
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