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The accelerator of a train can produce a...

The accelerator of a train can produce a uniform acceleration of `0.25ms^(-2)` and its brake can produce a retardation of `0.5ms^(-2)` The shortest time in which the train can travel between two stations 8 km apart is x minutes and 10 s, if it stops at both stations. The value of x is.

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[5 min 10 sec, 186 km/hr, Zero]
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