Question

Пассажирский поезд едет вслед за товарным . В 6 часов утра расстояние между ними было 70км. Скорость пассажирского поезда 80км/ч, а скорость товарного поезда 60км/ч.Успеет ли пассажирский поезд догнать товарный до 9 часов утра? Через сколько времени произойдёт встреча ? (ответ вырази сначала в часах , а потом в часах и минут ах)

Answer 1

80 - 60  = 20 км в час - скорость с которой происходит процесс догоняния.
70 км с такой скорость не преодолеешь за три часа. Только 60 км
Поэтому к 9 утра не догонит. Будет разница между ними в 10 км
Через три с половиной часа произойдет встреча

Решение такое 70 :  (80 - 60 ) = 3,5 часа

Answer 2

Problem Analysis

We are given the following information: - The passenger train is traveling at a speed of 80 km/h. - The freight train is traveling at a speed of 60 km/h. - At 6:00 AM, the distance between the two trains is 70 km.

We need to determine if the passenger train will catch up to the freight train by 9:00 AM and calculate the time it takes for them to meet.

Solution

To solve this problem, we can calculate the relative speed between the two trains and use it to find the time it takes for the passenger train to catch up to the freight train.

Let's calculate the relative speed between the two trains:

Relative speed = Speed of passenger train - Speed of freight train

Relative speed = 80 km/h - 60 km/h = 20 km/h

Now, let's calculate the time it takes for the passenger train to catch up to the freight train:

Time = Distance / Relative speed

Time = 70 km / 20 km/h = 3.5 hours

Since the time is given in hours, we can express it as 3 hours and 30 minutes.

Therefore, the passenger train will catch up to the freight train in 3 hours and 30 minutes.

Answer

The passenger train will catch up to the freight train in 3 hours and 30 minutes.