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A train starts from station 'A'.It has t...

A train starts from station 'A'.It has to stop at station 'B' 1.4km apart.The maximum possible speed and maximum possible rate of change of speed of train are `40m/s` and `2m/s^(2)` .The minimum time taken by it to reach station B is 10T sec.Given that maximum possible retardation is`0.2m/s^(2)` . Find T.

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