an express train moving at 30m/s reduces its speed to 10m/s in a distance of 240 km. If the breaking force is increased by 12.5% in the breaking find the distan

an express train moving at 30m/s reduces its speed to 10m/s in a distance of 240 km. If the breaking force is increased by 12.5% in the breaking find the distance that it travels before coming to rest.