Question

два спортсмена бегут по аллее парка навстречу друг другу . расстояние между ними в данный момент времени равно 440 м. скорость одного из них 100м/мин другого 120м/мин . через сколько минут они встретятся?

Answer 1

1)100+120=220м/мин-скорость обоих спортсменов
2)440:220=2мин
Ответ: спортсмены встретятся через 2 мин

Answer 2

To find out when the two athletes will meet, we can calculate the time it takes for each athlete to cover the distance between them. Let's assume that the athlete with a speed of 100 m/min is athlete A, and the athlete with a speed of 120 m/min is athlete B.

Calculating the time it takes for each athlete to cover the distance:

- The speed of athlete A is 100 m/min, so in 1 minute, athlete A will cover 100 meters. - The speed of athlete B is 120 m/min, so in 1 minute, athlete B will cover 120 meters.

Finding the time it takes for the athletes to meet:

- At the start, the distance between the two athletes is 440 meters. - As they are running towards each other, the total distance between them will decrease by the sum of their speeds every minute.

Let's calculate the time it takes for them to meet:

1. After 1 minute, athlete A will have covered 100 meters, and athlete B will have covered 120 meters. The remaining distance between them is 440 - (100 + 120) = 220 meters. 2. After 2 minutes, athlete A will have covered another 100 meters, and athlete B will have covered another 120 meters. The remaining distance between them is 220 - (100 + 120) = 0 meters.

Therefore, it will take them 2 minutes to meet.

Please note that this calculation assumes that the athletes maintain a constant speed throughout the entire duration of their run.