Question

Черепаха ползла 2 часа со скоростью 15,3 м/ч и 3 ч со скоростью 12,4 м/ч найдите среднюю скорость черепахи на всём пути

Answer 1

15,3*2=30,6м проползла черепаха за 2 часа
12,4*3=37,2м проползла черепаха за следующих 3 часа
2+3=5ч ползла черепаха
30,6+37,2=67,8м проползла черепаха за 5 часов
67,8:5=13,56м/ч средняя скорость черепахи на всем пути

Answer 2

Calculation of Average Speed

To find the average speed of the turtle over the entire journey, we need to calculate the total distance traveled and the total time taken.

The turtle crawled for 2 hours at a speed of 15.3 m/h, covering a distance of 2 * 15.3 = 30.6 meters.

Then, the turtle crawled for 3 hours at a speed of 12.4 m/h, covering a distance of 3 * 12.4 = 37.2 meters.

The total distance traveled by the turtle is 30.6 + 37.2 = 67.8 meters.

The total time taken by the turtle is 2 + 3 = 5 hours.

To find the average speed, we divide the total distance by the total time:

Average Speed = Total Distance / Total Time

Average Speed = 67.8 meters / 5 hours

Average Speed = 13.56 m/h

Therefore, the average speed of the turtle over the entire journey is 13.56 m/h.