Question

поезд ехал 2.5 со скоростью 54.6км/ч после чего сделал остоновку на станции метро на 0.5ч далие он в течении 1.2ч ехал со скоростью 70.35км.ч наидите среднию скорость поезда

Answer 1

Ответ:

средня скорость поезда приблизительно 60км/ч

Answer 2

Calculating the Average Speed of the Train

To calculate the average speed of the train, we can use the formula:

Average Speed = Total Distance / Total Time

First, let's calculate the total distance traveled by the train. We'll then find the total time taken for the entire journey.

Calculating Total Distance

The train traveled at a speed of 54.6 km/h for 2.5 hours, then made a stop at the metro station for 0.5 hours, and finally traveled at a speed of 70.35 km/h for 1.2 hours.

Total Distance = (Speed1 * Time1) + (Speed2 * Time2)

Total Distance = (54.6 km/h * 2.5 h) + (70.35 km/h * 1.2 h)

Total Distance = 136.5 km + 84.42 km

Total Distance = 220.92 km

Calculating Total Time

The total time taken by the train is the sum of the time taken at the initial speed, the time spent at the station, and the time taken at the final speed.

Total Time = Time1 + Stop Time + Time2

Total Time = 2.5 h + 0.5 h + 1.2 h

Total Time = 4.2 hours

Calculating Average Speed

Now, we can calculate the average speed using the formula:

Average Speed = Total Distance / Total Time

Average Speed = 220.92 km / 4.2 h

Average Speed = 52.6 km/h

So, the average speed of the train for the entire journey is 52.6 km/h.