Final answer:
The correct distance to stop from a railway crossing with an approaching train is at least 5 meters away, ensuring safety from potential dangers. Assessing when it's safe to cross a road involves considering both the distance of the car and its speed, not just the distance alone.
Step-by-step explanation:
At a railway crossing with a train approaching, it is vital for safety measures that you stop at least 5 meters away from the nearest rail. The options for this distance include: 4 m, 6 m, 3 m, and the correct answer of 5 m.
The importance of stopping at least 5 meters from the tracks helps to ensure a safe distance from any potential derailment or debris from a passing train, and it gives enough reaction time if a train approaches faster than expected. In another road safety scenario, if you see a car driving toward you and it is 28 meters away, it is not necessarily safe to walk across the road without knowing the car's speed and your own walking speed. Deciding when it's safe to cross involves assessing both the distance and the upcoming car's speed, as well as your ability to cross in time.
Safety at railroad crossings and when crossing the road in traffic are crucial for preventing accidents and ensuring personal well-being.