Question

Турист в первый день прошёл 28км за 6ч, во второй 15 км за 3 ч в третий 21км за 5 ч в четвёртый 24км за 5 ч . найдите среднюю скорость движения туриста на всём пройденом пути

Answer 1

Vср=Sобщ+tобщ

28+15+21+24=88 (км) S общее
6+3+5+5=19 (ч) t общее
88:19=4 12/19 (км/ч)
Ответ: средняя скорость 4 12/19 км/ч

Answer 2

Calculation of Average Speed

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

1. On the first day, the tourist walked 28 km in 6 hours. Therefore, the speed on the first day was 28 km / 6 hours = 4.67 km/h. 2. On the second day, the tourist walked 15 km in 3 hours. Therefore, the speed on the second day was 15 km / 3 hours = 5 km/h. 3. On the third day, the tourist walked 21 km in 5 hours. Therefore, the speed on the third day was 21 km / 5 hours = 4.2 km/h. 4. On the fourth day, the tourist walked 24 km in 5 hours. Therefore, the speed on the fourth day was 24 km / 5 hours = 4.8 km/h.

To calculate the average speed, we need to find the total distance and total time taken.

- Total distance = 28 km + 15 km + 21 km + 24 km =