Question

Реши задачу. Расстояние от села до города – 50 км. Из села в город вы- шел пешеход со скоростью 5 км/ч. Через 2 часа навстречу ему из города в село выехал велосипедист со скоростью 15 км/ч. Через какое время произойдёт встреча? задача на V t S .​

Answer 1

Ответ:

Пошаговое объяснение:

5 * 2 = 10 км прошел пешеход за 2 часа

50 - 10 = 40 км расстояние между пешеходом и велосипедистом

15 + 5 = 20 км/час скорость сближения

40 : 20 =2ч через такое время произойдёт встреча

Answer 2

Problem Analysis

To solve this problem, we need to find the time it takes for the pedestrian and the cyclist to meet. We know the distance between the village and the city is 50 km, and the pedestrian walks at a speed of 5 km/h while the cyclist rides at a speed of 15 km/h. We can use the formula `time = distance / speed` to calculate the time it takes for each person to reach the meeting point.

Solution

Let's calculate the time it takes for the pedestrian and the cyclist to reach the meeting point.

1. Time taken by the pedestrian: - Distance = 50 km - Speed = 5 km/h - Time = Distance / Speed = 50 km / 5 km/h = 10 hours

2. Time taken by the cyclist: - Distance = 50 km - Speed = 15 km/h - Time = Distance / Speed = 50 km / 15 km/h = 3.33 hours (rounded to two decimal places)

Since the cyclist started 2 hours after the pedestrian, we need to add 2 hours to the time taken by the cyclist.

3. Total time taken by the cyclist: - Time taken by the cyclist = 3.33 hours + 2 hours = 5.33 hours (rounded to two decimal places)

Answer

The pedestrian and the cyclist will meet approximately 5.33 hours after the cyclist starts their journey.

Please note that the above calculations assume a constant speed for both the pedestrian and the cyclist throughout their journey.

Let me know if you need any further assistance!