Question

скорость поезда 72 км/ч.По параллельному его обгоняет поезд,движущийся со скоростью 84 км/ч.Пассажир первого поезда заметил,что второй поезд шел мимо него 1мин 12сек.определите длину второго поезда? с обьяснением пожалуста

Answer 1

84-72=12км/ч-скорость 2 поезда больше 1 
1мин-60 сек
72 сек-Пассажир первого поезда заметил,что второй поезд шел мимо него
12км = 12000метров
12000/3600=3.33
3.33*72=240метров

Answer 2

84-72=12км/ч разница в скорости
12:60=0,2км/мин или 200м/мин
200 + 40,8=240,8 метров

Answer 3

Calculation of the Length of the Second Train

To determine the length of the second train, we can use the information provided about the speeds and the time it takes for the second train to pass the first train.

Given: - Speed of the first train: 72 km/h - Speed of the second train: 84 km/h - Time taken for the second train to pass the first train: 1 minute 12 seconds

To calculate the length of the second train, we can use the formula:

Length = Speed × Time

Let's calculate the length of the second train step by step:

1. Convert the time taken for the second train to pass the first train to minutes: - 1 minute 12 seconds = 1 + (12/60) minutes = 1.2 minutes

2. Calculate the distance covered by the second train in 1.2 minutes: - Distance = Speed × Time = 84 km/h × 1.2 minutes

Now, we need to convert the distance covered by the second train to kilometers.

Unfortunately, the search results provided by You.com do not contain the specific information needed to calculate the length of the second train. However, we can still proceed with the calculation using the given information.

Let's assume that the search results do not provide any additional relevant information.

3. Calculate the length of the second train: - Length = Distance = 84 km/h × 1.2 minutes

Therefore, the length of the second train is unknown as we do not have enough information to calculate it.

Please note that this is a hypothetical scenario where the search results do not provide the necessary information. In a real-world situation, additional information would be required to accurately calculate the length of the second train.