A flight dispatcher is calculating the actual ground speed for a cargo plane. The plane's speed in still air is represented by $r$, and it is flying directly into a headwind with a speed of $w$. Which of the following expressions represents the airplane's effective ground speed?

As a flight dispatcher for an overnight delivery service, you note that a cargo aircraft is flying into a wind current that is blowing directly against its direction of travel. Because this wind opposes the airplane's motion and decreases its actual ground speed, it is referred to as a ____.

Defining and Calculating the Effect of a Headwind

As a flight dispatcher for a global delivery service, you must understand how weather conditions affect your aircraft's performance. Match each term or mathematical expression below with its correct description regarding an airplane flying into a headwind.

As a flight dispatcher for an airline, you are calculating the actual speed of a cargo plane over the ground. If the plane has a speed of $r$ in still air and encounters a headwind with a speed of $w$, the headwind opposes the airplane's motion and results in an effective ground speed of $r - w$.