Question

Прочитай условия задачиЗапиши ответ к каждому вопросу задачи.Растояние от деревни до станции ровно 48 км.Из деревни на станцию отправился велосипедист со скоростью 12 км/ч.1) Какое расстояние проедет велосипедист за 1час?2)На каком расстоянии от деревни будет велосипидист через 30 минут.3) Через какое время велосипедист окажется на середине пути.4)За какое время велосипедист прибудет на станцию

Answer 1

Problem Analysis

We are given that the distance from the village to the station is 48 km, and a cyclist is traveling from the village to the station at a speed of 12 km/h. We need to find the following information: 1. The distance the cyclist will travel in 1 hour. 2. The distance from the village the cyclist will be after 30 minutes. 3. The time it will take for the cyclist to reach the midpoint of the journey. 4. The time it will take for the cyclist to reach the station.

Solution

1. To find the distance the cyclist will travel in 1 hour, we can simply multiply the speed of the cyclist by the time. The speed of the cyclist is given as 12 km/h, so the distance traveled in 1 hour is 12 km.

2. To find the distance from the village the cyclist will be after 30 minutes, we need to calculate half of the distance traveled in 1 hour. Since the distance traveled in 1 hour is 12 km, half of that is 6 km. Therefore, after 30 minutes, the cyclist will be 6 km from the village.

3. To find the time it will take for the cyclist to reach the midpoint of the journey, we need to calculate half of the total time taken for the journey. The total distance is 48 km, and the speed of the cyclist is 12 km/h. Therefore, the total time taken for the journey is 48 km / 12 km/h = 4 hours. Half of that is 2 hours. Therefore, the cyclist will reach the midpoint of the journey after 2 hours.

4. To find the time it will take for the cyclist to reach the station, we can use the same calculation as in the previous step. The total time taken for the journey is 4 hours, so the cyclist will reach the station after 4 hours.

Summary

To summarize the answers to the questions: 1. The cyclist will travel a distance of 12 km in 1 hour. 2. After 30 minutes, the cyclist will be 6 km from the village. 3. The cyclist will reach the midpoint of the journey after 2 hours. 4. The cyclist will reach the station after 4 hours.

Please let me know if you need any further clarification.