a train is approaching a platform with a speed of 10 km/hr.when it is at a distance of 2 km from the platform breaks are applied so that a uniform retardation is produced. at the same time ,a bird sitting on the pole near the platfiorm flies with the speed of 50 km/hr towards the train touches the front of the train and then returns to the pole.if the motion is repeated until the train comes to rast,the total distance travelled by the bird is?
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