Question

Два поезда вышли одновременно навстречу друг другу.Первый поезд двигался со скоростью 70км/ч а второй -64км/ч.Второй поезд прошёл до встречи 192км.Какое расстояние до встречи прошёл первый поезд.

Answer 1

1)t=S:V
   t=192:64=3 (ч)-время в пути

2)S=V*t
    S=70*3=210 (км)

Ответ:210 км проехал первый поезд до встречи.

Answer 2

Calculation of the Distance Traveled by the First Train

To calculate the distance traveled by the first train, we can use the formula:

Distance = Speed × Time

Given that the first train is traveling at a speed of 70 km/h and the second train has traveled 192 km until they meet, we need to find the time it took for the two trains to meet.

To find the time, we can use the formula:

Time = Distance / Relative Speed

The relative speed is the sum of the speeds of the two trains since they are moving towards each other.

Let's calculate the time it took for the two trains to meet:

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

Relative Speed = 70 km/h + 64 km/h = 134 km/h

Time = Distance / Relative Speed

Time = 192 km / 134 km/h = 1.4328 hours

Now that we have the time, we can calculate the distance traveled by the first train:

Distance = Speed × Time

Distance = 70 km/h × 1.4328 hours = 100.096 km

Therefore, the first train traveled approximately 100.096 km before meeting the second train.