Question

Со станции вышел товарный поезд со скоростью 50 км/ч.Через 3 ч с той же станции вслед за ним вышел электропоезд со скоростью 80 км/ч.Через сколько часов после своего выхода электропоезд догонит товарный поезд?РАСПИШИТЕ ПОЖАЛУЙСТА ВСЕ ДЕЙСТВИЯ ЗАДАЧИ!!!Я ЗНАЮ ОТВЕТ БУДЕТ 5,НО Я НЕЗНАЮ КАКИЕ ДЕЙСТВИЯ ПИСАТЬ!!!

Answer 1

1)50*3=150(км)-прошел тов.поезд один. 2)80-50=30(км/ч)-скорость сближения. 3)150:30=5(ч)-догонит эл.поезд тов.поезд. Ответ:через 5 часов

Answer 2

1)50*3=150км-проехал товарный за 3 часа.

2)80-50=30км/ч-скорость ускорения.

3)150:30=через 5 часов.

Answer 3

Problem Analysis

We are given that a freight train leaves a station with a speed of 50 km/h, and after 3 hours, an electric train leaves the same station with a speed of 80 km/h. We need to determine how many hours it will take for the electric train to catch up to the freight train.

Solution

To solve this problem, we can use the formula: time = distance / speed.

Let's assume that the time it takes for the electric train to catch up to the freight train is t hours.

During this time, the freight train will have traveled a distance of 50 * t km, and the electric train will have traveled a distance of 80 * t km.

Since the electric train catches up to the freight train, the distances traveled by both trains will be equal. Therefore, we can set up the equation:

50 * t = 80 * t

Simplifying the equation, we get:

30 * t = 0

Since the equation has no solution, it means that the electric train will never catch up to the freight train.

Therefore, the answer to the problem is that the electric train will not catch up to the freight train.

Answer

The electric train will not catch up to the freight train.

Note: The answer to this problem is based on the given information and the assumption that the trains are traveling on the same track. If there are any additional factors or conditions that were not mentioned in the problem, the answer may be different.