Question

Автомобиль 2 часа двигался со скоростью15 м/с, а затем проехал еще 1 час со скоростью 20 м/с. Какова его средняя скорость на всем пути?

Answer 1

1) Находим весь пройденный путь 2*15+1*20=30+20=50 (м) 2) Находим все время 2+1=3 (сек) 3) Чтоб найти среднюю скорость , весь пройденный путь делим на все пройденное время 50:3=16,7 (м/с) Ответ: 16,7

Answer 2

Calculating Average Speed

To calculate the average speed of the car for the entire journey, we can use the formula:

Average Speed = Total Distance / Total Time

First, let's calculate the total distance traveled by the car.

The car traveled at a speed of 15 m/s for 2 hours and then at a speed of 20 m/s for 1 hour.

The total distance traveled can be calculated as follows: Total Distance = (Speed1 * Time1) + (Speed2 * Time2)

Substituting the given values: Total Distance = (15 m/s * 2 hours) + (20 m/s * 1 hour)

Total Distance = (30 m) + (20 m) Total Distance = 50 meters

Now, let's calculate the total time taken for the entire journey.

Total Time = Time1 + Time2 Total Time = 2 hours + 1 hour Total Time = 3 hours

Now that we have the total distance and the total