Question

5. Автобус и легковая машина движутся навстречу друг другу. Скорость автобуса 70 км/ч, а легкового автомобиля-100 км/ч. Через сколько часов они встретятся, если в начале движения между ними было 850км? скажите пж все говорят 7/10 а мы это ещё не учили! я в 5 классе​

Answer 1

Ответ:5 часов

Пошаговое объяснение:

1) 100+70=170(км/ч)- скорость сближения

2)850:170=5(ч)

Answer 2

Problem Analysis

We are given the speeds of a bus and a car moving towards each other, as well as the initial distance between them. We need to determine how many hours it will take for them to meet.

Solution

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

The relative speed is the sum of the speeds of the bus and the car, as they are moving towards each other.

Let's calculate the time it will take for them to meet.

Calculation

Given: - Speed of the bus = 70 km/h - Speed of the car = 100 km/h - Initial distance between them = 850 km

Relative speed = Speed of the bus + Speed of the car = 70 km/h + 100 km/h = 170 km/h

Time = Initial distance / Relative speed = 850 km / 170 km/h = 5 hours

Therefore, it will take 5 hours for the bus and the car to meet.

Answer

The bus and the car will meet after 5 hours.

I hope this helps! Let me know if you have any further questions.