Question

Черепаха повзла1,5год зі швидкістю15,3м/год і 3,5год-зі швидкістю 12,4м/год, знайти середню швидкість черепахи на всьому шляху

Answer 1

1) 15,3 * 1,5 = 22,95 (м) - проползла черепаха за полтора часа;
2) 12,4 * 3,5 = 43,4 (м) - проползла черепаха за 3,5 часа;
3) 22,95 + 43,4 = 66,35 (м) - весь путь черепахи;
4) 1,5 + 3,5 = 5 (ч) - время в пути;
5) 66,35 : 5 = 13,27 (м/ч) - средняя скорость черепахи на протяжении всего пути.
Выражение: (15,3 * 1,5 + 12,4 * 3,5) : (1,5 + 3,5) = 13,27
Вiдповiдь: 13,27 м/год.

Answer 2

Calculation of Average Speed

To find the average speed of the turtle for the entire journey, we can use the formula:

Average Speed = Total Distance / Total Time

Let's calculate the average speed step by step.

1. Calculate the distance covered in the first 1.5 hours at a speed of 15.3 m/h: - Distance = Speed * Time = 15.3 m/h * 1.5 h = 22.95 meters

2. Calculate the distance covered in the next 3.5 hours at a speed of 12.4 m/h: - Distance = Speed * Time = 12.4 m/h * 3.5 h = 43.4 meters

3. Calculate the total distance covered: - Total Distance = Distance in the first 1.5 hours + Distance in the next 3.5 hours = 22.95 meters + 43.4 meters = 66.35 meters

4. Calculate the total time taken: - Total Time = Time in the first 1.5 hours + Time in the next 3.5 hours = 1.5 hours + 3.5 hours = 5 hours

5. Calculate the average speed: - Average Speed = Total Distance / Total Time = 66.35 meters / 5 hours = 13.27 m/h

Therefore, the average speed of the turtle for the entire journey is 13.27 meters per hour.

[[1]]