Question

Из села Уютное со скоростью 9,4 км/ч выехал велосипедист. Когда он отъехал от Уютного на 1,26 км, следом выехал второй велосипедист со скоростью 11,2 км/ч. За какое время 2-ой велосипедист догонит 1-ого?

Answer 1

Скорость сближения равна 11,2-9,4=1,8 км/ч
1,26:1,8=0,7 часа или 42 минуты

Answer 2

Problem Analysis

We are given the following information: - A cyclist leaves the village of "Уютное" (Uyutnoye) with a speed of 9.4 km/h. - When the first cyclist has traveled 1.26 km, a second cyclist leaves the village with a speed of 11.2 km/h. - We need to determine how long it will take for the second cyclist to catch up to the first cyclist.

To solve this problem, we can use the formula: time = distance / speed. We'll calculate the time it takes for the first cyclist to travel 1.26 km, and then use that time to calculate the distance the second cyclist will cover in the same time. Finally, we'll divide this distance by the speed of the second cyclist to find the time it takes for the second cyclist to catch up.

Calculation

Let's calculate the time it takes for the first cyclist to travel 1.26 km:

Time taken by the first cyclist = Distance / Speed = 1.26 km / 9.4 km/h

Now, let's calculate the distance covered by the second cyclist in the same time:

Distance covered by the second cyclist = Time taken by the first cyclist * Speed of the second cyclist

Finally, we can calculate the time it takes for the second cyclist to catch up to the first cyclist:

Time taken by the second cyclist = Distance covered by the second cyclist / Speed of the second cyclist

Let's perform the calculations:

Time taken by the first cyclist = 1.26 km / 9.4 km/h = 0.134 hours

Distance covered by the second cyclist = 0.134 hours * 11.2 km/h = 1.4992 km

Time taken by the second cyclist = 1.4992 km / 11.2 km/h = 0.134 hours

Answer

The second cyclist will catch up to the first cyclist in approximately 0.134 hours.

Please note that the above calculations assume constant speeds for both cyclists and do not take into account any external factors that may affect the actual time it takes for the second cyclist to catch up.