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A,B and C are three collinear points. B ...

A,B and C are three collinear points. B lies between A and C. A car stands on point A has reached to B after 3 seconds. If the angle of elevation of a pole of height 10m at C from the point A is `30^(@)` and from B is `45^(@)`, then velocity of the car is (given that acceleration of car is constant).

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