Answer: The correct answer is 1,100 km/hour.
Step-by-step explanation:
Displacement of the plane = 4,400 km
Time taken by the plane = 4.0 hour
![Velocity=(Displacement)/(time)=(4,400 km)/(4.0 hour)=1,100 km/hour](https://img.qammunity.org/2019/formulas/physics/high-school/3gzs34ncxgkw4uwf40lo8p1b36ktzjuf10.png)
Since, Velocity is a vector quantity which means it has direction with magnitude. So, the velocity of the plane is 1,100 km /hour west.
Hence, the correct answer is 1,100 km/hour.