Question

Два поезда выехали с одной и той же станции одновременно в противоположных направлениях один поезд движется со скоростью 60 км а час другой 90 км в час на каком расстоянии друг от друга окажутся поезда через 2 часа?через сколько времени расстояние между поездами будет 450 км?

Answer 1

1)60+90=150(км/ч)скорость сближения
2)150*2=300(км)расстояние 
3)450:150=3(ч)время
4)450-300=150(км)останется проехать
Ответ:останется проехать 150 километров.

Answer 2

Calculation of Distance between Trains after 2 Hours

To calculate the distance between the two trains after 2 hours, we need to determine the total distance traveled by each train during that time.

Train 1 is traveling at a speed of 60 km/h, and Train 2 is traveling at a speed of 90 km/h.

Using the formula distance = speed × time, we can calculate the distance traveled by each train:

- Distance traveled by Train 1 = 60 km/h × 2 hours = 120 km. - Distance traveled by Train 2 = 90 km/h × 2 hours = 180 km.

To find the distance between the two trains, we subtract the distance traveled by Train 1 from the distance traveled by Train 2:

- Distance between the two trains after 2 hours = Distance traveled by Train 2 - Distance traveled by Train 1 = 180 km - 120 km = 60 km.

Therefore, after 2 hours, the two trains will be 60 kilometers apart from each other.

Calculation of Time when Distance between Trains is 450 km

To calculate the time it takes for the distance between the two trains to be 450 km, we need to determine the time it takes for Train 2 to cover that distance.

Since Train 2 is traveling at a speed of 90 km/h, we can use the formula time = distance / speed to calculate the time:

- Time taken for Train 2 to cover a distance of 450 km = 450 km / 90 km/h = 5 hours.

Therefore, it will take 5 hours for the distance between the two trains to be 450 km.

Note: The calculations assume that the trains maintain a constant speed and do not encounter any obstacles or delays during their journey.