Question

Два поезда отъехали одновременно от вокзала в противоположных направлениях.через 5 ч расстояние между ними было 600км скорость одного поезда 70км/ч определи скорость второго поезда

Answer 1

600÷5=120(км/ч) скорость отдаления
120-70=50(км/ч)

или

70*5=350(км) прлехал один поезд
600-350=250(км) проехал второй поезд
250÷5=50(км/ч)

ответ: 50 км/ч скорость второго поезда

Answer 2

1) 600:5=120 (км/ч)-скорость удаления.
2)120-70=50 (км/ч)
Ответ: 50 км/ч - скорость второго поезда.

Answer 3

Problem Analysis

We are given that two trains depart simultaneously from a train station in opposite directions. After 5 hours, the distance between them is 600 km. We need to determine the speed of the second train.

Solution

Let's assume the speed of the first train is 70 km/h. We can use the formula `distance = speed * time` to calculate the distance traveled by the first train in 5 hours. Since the two trains are moving in opposite directions, the total distance between them is the sum of the distances traveled by each train.

Let's calculate the distance traveled by the first train: - Speed of the first train = 70 km/h - Time = 5 hours

Using the formula `distance = speed * time`, we can calculate the distance traveled by the first train: - Distance = 70 km/h * 5 hours = 350 km.

Since the total distance between the two trains is 600 km, we can subtract the distance traveled by the first train from the total distance to find the distance traveled by the second train: - Total distance = 600 km - Distance traveled by the first train = 350 km

Distance traveled by the second train = Total distance - Distance traveled by the first train = 600 km - 350 km = 250 km.

Therefore, the speed of the second train can be calculated using the formula `speed = distance / time`: - Distance traveled by the second train = 250 km - Time = 5 hours

Using the formula `speed = distance / time`, we can calculate the speed of the second train: - Speed = 250 km / 5 hours = 50 km/h.

Answer

The speed of the second train is 50 km/h.

References

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