Question

из Пункта А вышел автомобиль со скоростью 80 км/ч,через час вышел другой автомобиль со скоростью 110 км/ч,через сколько времени второй автомобиль догонит первый?

Answer 1

Ответ:

через 2 ч 40 мин.

Пошаговое объяснение:

За час первый автомобиль прошел 80 км. Значит расстояние между автомобилями на момент выхода второго - 80 км. Скорость сближения автомобилей: 110-80=30 км/ч.

Расстояние 80 км, скорость 30 км/ч. Догонит первого через 80:30=8:3=8/3 [ч]=2 ч 40 мин

Answer 2

Problem Analysis

We are given two cars, one traveling at a speed of 80 km/h and the other at a speed of 110 km/h. We need to determine how long it will take for the second car to catch up to the first car.

Solution

To solve this problem, we can use the formula: time = distance / speed. Since both cars are traveling at a constant speed, we can assume that the distance covered by both cars will be the same when the second car catches up to the first car.

Let's calculate the time it takes for the second car to catch up to the first car:

1. Let's assume that the time it takes for the second car to catch up to the first car is t hours. 2. The distance covered by the first car in t hours is 80t km. 3. The distance covered by the second car in t hours is 110t km. 4. Since both cars cover the same distance when the second car catches up to the first car, we can set up the equation: 80t = 110t. 5. Solving this equation, we find that t = 0. This means that the second car catches up to the first car instantly.

Therefore, the second car will catch up to the first car in 0 hours.

Answer

The second car will catch up to the first car in 0 hours.