Task data: S (distance traveled between stations) = 6 km (in SI system S = 6 * 10 ^ 3 m); t (time required) = 4 minutes (in SI t = 240 s).
To determine the speed of a given subway train, use the formula: V = S / t.
Calculation: V = 6 * 10 ^ 3/240 = 25 m / s.
Answer: The given subway train was moving at a speed of 25 m / s.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.