Question

Служебная собака бросилась догонять нарушителя границы,когда между ними было 1,8км.С какой скоростью бежал нарушитель,если скорость собаки 19км/ч и она догнала его через 0,2часса

Answer 1

Узнаем сколько км пробежала собака за 0,2 часа:
19*0,2=3,8(км)
Далее мы узнаем какое расстояние пробежал нарушитель:
3,8-1,8=2(км)
И наконец, мы узнаем какова скорость нарушителя:
2/0,2=10(км/ч)
Ответ: 10 км/ч.

Answer 2

Problem Analysis

We are given that a service dog chased after a border violator when there was a distance of 1.8 km between them. The dog's speed is 19 km/h, and it caught up with the violator in 0.2 hours. We need to determine the speed at which the violator was running.

Solution

To find the speed of the violator, we can use the formula:

Speed = Distance / Time

Let's calculate the speed of the violator using the given information.

Calculation

Distance between the dog and the violator = 1.8 km Time taken by the dog to catch the violator = 0.2 hours

Using the formula, we can calculate the speed of the violator:

Speed = Distance / Time

Speed = 1.8 km / 0.2 hours

Speed = 9 km/h

Therefore, the violator was running at a speed of 9 km/h.

Conclusion

The violator was running at a speed of 9 km/h when the service dog chased after them.