Question

Две автомашины движутся навстречу друг другу со скоростями 60 км\ч и 80 км\ч. Расстояние между ними 500 км. Какое расстояние будет между ними через 3 мин? через 5 мин

Answer 1

1)60+80= 140 (km/h)- Скорость сближения. 
3 мин = 0.05 часа
500- (140*0.05)=493 км
5 мин = 1/12 часа
500- (140* 1/12)=500- 11 целых 2/3= 488 целых 1/3
Ответ: 493 км; 488 целых 1/3 км. 

Answer 2

Calculation of Distance between Two Cars

To calculate the distance between two cars moving towards each other, we can use the formula:

Distance = (Speed of Car 1 + Speed of Car 2) * Time

Let's calculate the distance between the two cars after 3 minutes and after 5 minutes.

1. After 3 minutes: - Speed of Car 1 = 60 km/h - Speed of Car 2 = 80 km/h - Time = 3 minutes = 3/60 hours = 0.05 hours

Using the formula, we can calculate the distance:

Distance = (60 km/h + 80 km/h) * 0.05 hours

Calculating the above expression, we find:

Distance = 140 km * 0.05 hours = 7 km

Therefore, the distance between the two cars after 3 minutes will be 7 km.

2. After 5 minutes: - Speed of Car 1 = 60 km/h - Speed of Car 2 = 80 km/h - Time = 5 minutes = 5/60 hours = 0.0833 hours

Using the formula, we can calculate the distance:

Distance = (60 km/h + 80 km/h) * 0.0833 hours

Calculating the above expression, we find:

Distance = 140 km * 0.0833 hours = 11.67 km

Therefore, the distance between the two cars after 5 minutes will be approximately 11.67 km.

Please note that these calculations assume constant speeds for both cars and do not account for any changes in acceleration or deceleration.