[Pisces]

We are not saying that your method is false. It is exactly how you would determine the target speed. Just that the number applied in it is incorrect and having no basis in reality. (it's only partially correctly used, it is missing the application of another number to be correct: multiply by 3600 seconds, divide by 1852 meters) Otherwise it will lead to incorrect results when attempting to use it in more challenging circumstances. If you are willing to accept those losses then good for you. But it seems like a disservice to the students if they are not told how to get better odds for succes that is based on reality.