An express train was about to enter a village when the locals were informed by a small kid that the tracks are missing. The train is at a distance of 3 km and time it takes to stop after brakes are applied is 15 sec. The tracks are at a distance of 2.5 km from the village. At what speed should the locals run if the train is running at a speed of 180kmph. The length of the train is 600 m. 1. 56 kmph 2. 200 kmph 3. 175 kmph 4. 158 kmph 5. None of these