Question

Как решить эту задачу? Помогите пожалуйста! Диаметр колеса автомобиля равен 0,8 м. За 12,5 мин. колесо автомобиля сделало 5000 оборотов. Найдите скорость автомобиля.

Answer 1

Длина окружности равна 3.14*0,8=2,512м
     расстояние которое проехало колесо                                 2,512*5000=12560м или 12,5 км
значит за 12.5 мин. оно проехало 12.5 км значит 1 км. за 1 мин.т.е. 60 км. в час

Answer 2

Calculating the Car's Speed

To calculate the speed of the car, we can use the formula:

speed = distance / time

First, let's find the distance traveled by the car in 12.5 minutes. We know that the wheel made 5000 revolutions, and the diameter of the wheel is 0.8 meters.

Calculating Distance Traveled

The distance traveled by the car in one revolution of the wheel is equal to the circumference of the wheel. The formula for the circumference of a circle is:

circumference = π * diameter

Substituting the given diameter (0.8 meters) into the formula, we get:

circumference = π * 0.8

Now, we can calculate the distance traveled in 5000 revolutions.

Calculating Speed

Finally, we can use the formula speed = distance / time to find the speed of the car.

Let's calculate the distance traveled and then the speed of the car.

Calculations

- Circumference of the wheel: π * 0.8- Distance traveled in 5000 revolutions: 5000 * (π * 0.8)- Time taken: 12.5 minutes

Now, we can calculate the speed using the formula speed = distance / time.