Question

Из риги в Вильнюс выехал поезд со скоростью 60км/ч,через 2 часа вслед за ним выехал електропоезд со скоростью 90км/ч Сможет ли электропоезд догнать поезд через 3часа?

Answer 1

Нет, не сможет, тк когда э-поезд проезжает 3 часа, обычный едет уже 5 часов и проезжает 300км, когда как э-поезд проезжает только 270

Answer 2

Нет , т.к первый поезд за 5 часов проедет 300 км. , а электропоезд за 3 часа проедет 270 км.

Answer 3

Problem Analysis

We are given that a train departs from Riga to Vilnius with a speed of 60 km/h. After 2 hours, an electric train departs from Riga to Vilnius with a speed of 90 km/h. We need to determine if the electric train will be able to catch up to the regular train after 3 hours.

Solution

To solve this problem, we can calculate the distances covered by both trains after 3 hours and compare them.

Let's start by calculating the distance covered by the regular train after 3 hours. Since the regular train has a speed of 60 km/h, the distance covered can be calculated using the formula:

Distance = Speed × Time

For the regular train: Distance = 60 km/h × 3 hours = 180 km

Now, let's calculate the distance covered by the electric train after 3 hours. Since the electric train has a speed of 90 km/h, the distance covered can be calculated using the same formula:

For the electric train: Distance = 90 km/h × 3 hours = 270 km

Comparing the distances covered, we can see that the electric train has covered a greater distance (270 km) compared to the regular train (180 km). Therefore, the electric train will be able to catch up to the regular train after 3 hours.

Conclusion

The electric train will be able to catch up to the regular train after 3 hours. The electric train will have covered a greater distance compared to the regular train.