Question

Помогите решить задачу плиз!Расстояние между населёнными пунктами 40 км. Мотоциклист начинает движение из 1 пункта в другой со скоростью 15 м/с. Одновременно навстречу ему начинает двигаться велосипедист со скоростью 5 м/с. Через сколько времени они встретятся?

Answer 1

40км=40000м

пусть время, через которе они встретятся равно t, тогда составим уравнение:

15*t+5*t=40000

20*t=40000

t=2000c. если нужно в минутах, тогда через $\frac{2000}{60}$ = $33\frac{1}{3}$ минут

Answer 2

Problem Analysis

To solve this problem, we need to find the time it takes for the motorcyclist and the cyclist to meet. We are given the distance between the two towns (40 km) and the speeds of the motorcyclist (15 m/s) and the cyclist (5 m/s). We can use the formula `time = distance / speed` to calculate the time it takes for each of them to travel the distance.

Calculation

Let's calculate the time it takes for the motorcyclist and the cyclist to meet.

The distance between the towns is 40 km, which is equal to 40,000 meters.

The motorcyclist's speed is 15 m/s, so the time it takes for the motorcyclist to travel the distance is: ``` time_motorcyclist = distance / speed_motorcyclist = 40,000 m / 15 m/s = 2,666.67 s ```

The cyclist's speed is 5 m/s, so the time it takes for the cyclist to travel the distance is: ``` time_cyclist = distance / speed_cyclist = 40,000 m / 5 m/s = 8,000 s ```

Answer

Therefore, the motorcyclist and the cyclist will meet after approximately 2,666.67 seconds (or 44 minutes and 26.67 seconds).

Please let me know if you need any further assistance!