Question

Электричка отправилась из города9ч15мин и прибыла на конечную станцию в 10ч12мин.По пути она делала остановку на каждой из12промежуточных станций в среднем на 35с.Сколько времени электричка находилась в движении от городдо конечной станции? С какой средней скоростью двигалась электричка, если известно,что растояние от городдо конечной станции48км?(Вырази расстояние в метрах,а время в минутах)

Answer 1

10ч 12 мин=612 мин

9ч 15 мин=555 мин

612-555=57 мин-------поезд был в пути с остановками

12*35=420с=7мин------он потратил на остаовку

57-7=50 мин------электропоезд находился в движение от города до конечной станции.

48 км=48000 м

48000:50=960 м/мин--------средней скоростью электропоезд двигался.

Answer 2

Calculating the Time in Motion and Average Speed of the Train

To calculate the time in motion and the average speed of the train, we can use the information provided:

- The train departed from the city at 9:15 and arrived at the final station at 10:12. - The train made stops at each of the 12 intermediate stations, averaging 35 seconds per stop. - The distance from the city to the final station is 48 km.

First, let's calculate the total time the train spent in motion and then determine its average speed.

Calculating the Time in Motion

The total time the train spent in motion can be calculated by subtracting the time spent on stops from the total travel time.

The total travel time can be calculated as: 10 hours and 12 minutes - 9 hours and 15 minutes = 57 minutes

The total time spent on stops can be calculated as: 12 stops * 35 seconds = 420 seconds = 7 minutes

Therefore, the time the train spent in motion is: 57 minutes - 7 minutes = 50 minutes

Calculating the Average Speed

To calculate the average speed of the train, we can use the formula: Average Speed = Total Distance / Total Time

Given that the distance from the city to the final station is 48 km and the time in motion is 50 minutes, we can calculate the average speed.

Converting the distance to meters: 48 km * 1000 m/km = 48,000 m

Converting the time to minutes: 50 minutes

Now, we can calculate the average speed: Average Speed = 48,000 m / 50 minutes

Conclusion

The train was in motion for 50 minutes and had an average speed of 960 meters per minute.