Answer:
![v=697.2km/h](https://img.qammunity.org/2021/formulas/physics/college/vov2ozd4aixcslzn99ftb133xr51909jbt.png)
Step-by-step explanation:
Hello.
In this case, since the velocity is computed via the division of the distance traveled by the elapsed time:
![V=(d)/(t)](https://img.qammunity.org/2021/formulas/mathematics/middle-school/15evqhz649kr7vfdpd6pkjs206witk9j60.png)
The distance is clearly 1743 km and the time is:
![t=2h+30min*(1h)/(60min) =2.5h](https://img.qammunity.org/2021/formulas/physics/college/crjj7p9mkhghmfrjpzcggz92lfioj0ih6a.png)
Thus, the velocity turns out:
![v=(1743km)/(2.5h)\\ \\v=697.2km/h](https://img.qammunity.org/2021/formulas/physics/college/mse4dw9beg0nzy257c4g62o7ay050j3hbn.png)
Which is a typical velocity for a plane to allow it be stable when flying.
Best regards.