Question

Со станции одновременно в противоположном направлениях отправились два поезда .один поезд ехал со скоростью 72 км ч а второй 84 км ч .какое расстояние было между ними когда второй поезд проехал 2 520

Answer 1

1)2520/84=30 (ч)
2)72*30=2160 (км)
3)2520+2160=4680 (км)
Ответ:4680 км

Answer 2

1)2520:84=30(часов)-ехали поезда
2)72*30=2160(км)-проехал первый поезд
3)2160+2520=4680(км)
Ответ:между ними было 4680 км.

Answer 3

Calculation of the Distance between the Trains

To calculate the distance between the two trains, we need to determine the time it took for the second train to travel 2,520 km. We can use the formula:

Distance = Speed × Time

Let's calculate the time it took for the second train to travel 2,520 km at a speed of 84 km/h:

Time = Distance / Speed

Time = 2,520 km / 84 km/h

Calculating this, we find that the time taken by the second train to travel 2,520 km is 30 hours.

Now, we can calculate the distance between the two trains when the second train completed this journey.

The first train was traveling at a speed of 72 km/h, and the second train was traveling at a speed of 84 km/h. Since they were traveling in opposite directions, their relative speed is the sum of their individual speeds:

Relative Speed = Speed of First Train + Speed of Second Train

Relative Speed = 72 km/h + 84 km/h

Calculating this, we find that the relative speed of the two trains is 156 km/h.

To find the distance between the two trains, we can use the formula:

Distance = Relative Speed × Time

Distance = 156 km/h × 30 hours

Calculating this, we find that the distance between the two trains when the second train completed its journey is 4,680 km.

Therefore, the distance between the two trains when the second train completed its journey is 4,680 km.