Question

В течении 3 мин поезд двигался равномерно со скоростью равной 90км/ч какой путь прошёл поезд за это время.Изобразите зависимость график скорости от времени.

Answer 1

Дано:                      Си         Решение:
t=3мин                    =0.05ч    U=S\t
U=90км\ч                                 S=Ut
Найти:S и U=U(t)                    S=90*0.05=4.5км
  (если нужно в систеле СИ, то сорри)

Answer 2

Calculation of Distance Traveled by the Train

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

Distance = Speed × Time

Given that the train is moving at a constant speed of 90 km/h and the time is 3 minutes, we need to convert the time to hours before calculating the distance.

1 minute is equal to 1/60 hours, so 3 minutes is equal to 3/60 = 1/20 hours.

Now we can calculate the distance:

Distance = 90 km/h × 1/20 h

Simplifying the equation:

Distance = 90/20 km

Therefore, the train traveled 4.5 kilometers in 3 minutes.

Graph of Speed vs. Time

To depict the graph of speed vs. time, we can plot the speed on the y-axis and time on the x-axis. Since the train is moving at a constant speed of 90 km/h, the graph will be a horizontal line at a height of 90 on the y-axis.

Here is the graph:

     ^
     |
90   |_____________________
     |                     |
     |                     |
     |                     |
     |                     |
     |                     |
     |_____________________|___________>
            Time (minutes)

Please note that the graph is a horizontal line at a height of 90 on the y-axis, indicating that the speed remains constant at 90 km/h throughout the given time period.

I hope this helps! Let me know if you have any further questions.