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JEE Main Physics question

PhysicsMotion in a Straight LineJEE Main

The motor of an electric train can give it an acceleration of 1 ms and the brakes can give a negative acceleration of 3 ms. The shortest time in which the train can make a trip between two stations 1215 m apart is

Answer: (B)

Solution

Let the train accelerate for (reaching ) then decelerate for to rest. Distance

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Question ID VK-151960