Question

Черепаха ползла 1,5 ч со скоростью 15,3м/ч и 3,5ч со скоростью 12,4 м/ч. Найти среднюю скорость черепахи на всем пути

Answer 1

Для нахождения средней скорости в пути надо сначала определить длину всего пути, затем общее время в пути, и разделить длину всего пути на общее время в пути.

1) 15,3 • 1,5 = 22,95 м проползла черепаха со скоростью 15,3 м/ч
2) 12,4 • 3,5 = 43,4 м проползла черепаха со скоростью 12,4 м/ч.
3) 22,95 + 43,4 = 66,35 м проползла черепаха всего.
4) 1,5 + 3,5 = 5 ч черепаха была в пути всего.
5) 66,35 : 5 = 13,27 м/ч - средняя скорость черепахи.

Answer 2

Calculation of Average Speed of the Turtle

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

Given information: - The turtle crawled for 1.5 hours at a speed of 15.3 m/h. - The turtle crawled for 3.5 hours at a speed of 12.4 m/h.

To calculate the total distance traveled, we can add the distances covered during each period of time: - Distance covered in the first 1.5 hours: 15.3 m/h * 1.5 h = 22.95 m - Distance covered in the next 3.5 hours: 12.4 m/h * 3.5 h = 43.4 m

The total distance traveled by the turtle is 22.95 m + 43.4 m = 66.35 m.

To calculate the total time taken, we can add the time periods: - Time taken in the first 1.5 hours: 1.5 hours - Time taken in the next 3.5 hours: 3.5 hours

The total time taken by the turtle is 1.5 hours + 3.5 hours = 5 hours.

Now, we can calculate the average speed of the turtle by dividing the total distance traveled by the total time taken: Average speed = Total distance / Total time = 66.35 m / 5 hours = 13.27 m/h.

Therefore, the average speed of the turtle over the entire distance is 13.27 m/h.