Final answer:
The question deals with the topic of relative velocity within the field of Physics, where a student must calculate the airspeed of a plane and the speed of the wind using vector addition.
Step-by-step explanation:
The subject of this question is Physics, specifically relating to the topic of relative velocity in vectors. Working out the airspeed of the plane and the speed of the wind involves understanding how vectors add together when considering the velocity of the plane relative to the ground, as well as the impact of wind as an additional vector affecting that velocity.
For example, if an airplane has an airspeed (speed relative to the air) of 300 km/h and there's a wind blowing from the northeast at 90 km/h, the pilot has to adjust the plane's heading to reach the intended destination due north. These adjustments require vector calculations, which is a component of Physics.
Another scenario might be an airplane with an airspeed of 280 m/s due east, traveling with a tailwind. If there's a time stipulation and a specific direction of arrival, calculations must be made to determine the velocity relative to the ground and the magnitude and direction of the wind.