JEE Main Physics question

PhysicsMotion in a Straight LineJEE Main

Two trains travelling on the same track are approaching each other with equal speeds of 40 ms. The drivers of the trains begin to decelerate simultaneously when they are just 2 km apart. If the decelerations are both uniform and equal, the value of deceleration to barely avoid a collision should be

Answer: (A)

Solution

Relative closing speed ms; relative deceleration (both trains decelerate equally). For the gap

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Question ID VK-152127