Question

Реши задачу. Из двух городов, расстояние между которыми 800 км, одновременно навстречу друг другу выехали два автомобиля, которые встретились через 4 часа. Один автомобиль ехал со скоростью 60 км/ч . Какова скорость второго автомобиля?

Answer 1

Відповідь:

Покрокове пояснення:

60*4=240км проехал один автомобиль

800-240-560км проехал второй автомобиль

560:4=140км/ч скорость второго автомобиля

Answer 2

Ответ:

Пошаговое объяснение:

800 : 4 = 200км/ч скорость сближения

200 - 60 = 140км/ч  скорость второго автомобиля

Answer 3

Problem Analysis

We have two cars traveling towards each other from two cities that are 800 km apart. The cars meet after 4 hours. One car is traveling at a speed of 60 km/h. We need to find the speed of the second car.

Solution

To find the speed of the second car, we can use the formula:

Speed = Distance / Time

Let's calculate the speed of the second car using this formula.

Calculation

The first car is traveling at a speed of 60 km/h. The time taken to meet is 4 hours. The distance traveled by the first car can be calculated using the formula:

Distance = Speed * Time

Substituting the values, we get:

Distance = 60 km/h * 4 hours = 240 km

Since the two cars meet after 4 hours, the total distance covered by both cars is equal to the distance between the two cities, which is 800 km. Therefore, the distance covered by the second car can be calculated as:

Distance covered by second car = Total distance - Distance covered by first car

Substituting the values, we get:

Distance covered by second car = 800 km - 240 km = 560 km

Now, we can calculate the speed of the second car using the formula:

Speed = Distance / Time

Substituting the values, we get:

Speed of second car = 560 km / 4 hours = 140 km/h

Answer

The speed of the second car is 140 km/h.

Note: The sources provided do not contain specific information related to this problem. The solution is derived using basic mathematical principles and formulas.