Question

Расстояние между соседними километровыми столбами электропоезд проходит за 1мин 12с. Наиди скорость электропоезда, выразив её в км и часах

Answer 1

1мин12сек=1,2мин=0,02часа

1км/0,02часа=50км/ч.

Если вы конечно имели в виду, сто между соседними столбами расстояние 1 км. 

Answer 2

Calculation of the Speed of the Electric Train

To find the speed of the electric train, we need to know the distance between adjacent kilometer posts and the time it takes for the train to pass that distance.

According to the information provided, the electric train passes the distance between adjacent kilometer posts in 1 minute and 12 seconds.

To calculate the speed of the electric train, we can use the formula:

Speed = Distance / Time

Let's calculate the speed using the given information:

Distance: The distance between adjacent kilometer posts is not provided in the question. Unfortunately, I couldn't find the exact distance between kilometer posts in the search results.

Time: The time it takes for the electric train to pass the distance between adjacent kilometer posts is given as 1 minute and 12 seconds.

Now, let's calculate the speed of the electric train:

Speed = Distance / Time

Since we don't have the exact distance, we cannot calculate the speed accurately. However, if we assume a distance of 1 kilometer between adjacent kilometer posts, we can calculate the speed based on this assumption.

Distance = 1 kilometer = 1000 meters

Time = 1 minute 12 seconds = 72 seconds

Speed = 1000 meters / 72 seconds

Converting the speed to kilometers per hour:

Speed = (1000 meters / 72 seconds) * (3600 seconds / 1 hour) = 50 kilometers per hour

Therefore, if we assume a distance of 1 kilometer between adjacent kilometer posts, the speed of the electric train would be approximately 50 kilometers per hour.

Please note that this calculation is based on the assumption of a 1-kilometer distance between adjacent kilometer posts. The actual distance may vary, and without the exact distance, we cannot provide an accurate speed calculation.