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? ответ должен получится 30 км

Answer 1

Скорость 1-го велосипедиста - 9,4 км/ч. Скорость 2-го велосипедиста - 11,2 км/ч. Расстояние между ними 1,25 км. Через сколько 2-й догонит 1-го? Задача на сближение - объект с большей скоростью догоняет объект с меньшей скоростью. В этом случае скорость сближение = разности скоростей. 1)11,2-9,4=1,8(км/ч) скорость сближения. 2)1,26/1,8=0,7(ч) Догонит через 0,7 ч или 42 минуты.

Answer 2

Problem Analysis

We are given the information that a cyclist left the village of "Уютное" (Uyutnoye) with a speed of 9.4 km/h. After traveling 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.

Solution

To solve this problem, we can use the formula: time = distance / speed.

Let's calculate the time it takes for the first cyclist to travel 1.26 km: - Distance = 1.26 km - Speed = 9.4 km/h

Using the formula, we can calculate the time taken by the first cyclist: time1 = distance / speed = 1.26 km / 9.4 km/h.

Now, let's calculate the time it takes for the second cyclist to catch up to the first cyclist: - Distance = 0 km (since the second cyclist starts from the same point as the first cyclist) - Speed = 11.2 km/h

Using the formula, we can calculate the time taken by the second cyclist: time2 = distance / speed = 0 km / 11.2 km/h.

Since the second cyclist starts from the same point as the first cyclist, the distance between them remains constant. Therefore, the second cyclist will catch up to the first cyclist when their travel times are equal.

To find the time it takes for the second cyclist to catch up to the first cyclist, we can set the two time equations equal to each other and solve for time2:

time1 = time2

1.26 km / 9.4 km/h = 0 km / 11.2 km/h

Simplifying the equation, we get:

1.26 / 9.4 = 0 / 11.2

Since the distance traveled by the second cyclist is 0 km, the equation simplifies to:

1.26 / 9.4 = 0

However, this equation is not solvable because we cannot divide by zero. Therefore, the second cyclist will never catch up to the first cyclist.

Answer

Based on the given information, the second cyclist will not be able to catch up to the first cyclist.