When an airplane experiences a tailwind, are the forces added or subtracted?

where does a tail wind come from?

All forces are added (but some may be negative)

When an airplane experiences a tailwind, the forces acting on the airplane are added.

When an airplane experiences a tailwind, the forces are added.

A tailwind refers to the wind blowing in the same direction as the airplane's travel, from behind. This wind helps push the airplane forward, providing an additional force that aids its propulsion. As a result, the tailwind increases the airplane's groundspeed, or the speed at which it is moving relative to the Earth's surface. Therefore, the forces of the tailwind and the airplane are added together, contributing to increased speed and efficiency.