Force

The intensity of an impetus, or the intensity of an input.

Aviation Maintenance Technician Handbook — General, p. G-5

Also defined in 2 more sources

Energy brought to bear on an object that tends to cause motion or to change motion.

Aviation Maintenance Technician Handbook — Airframe, p. G-16

The energy applied to an object that attempts to cause the object to change its direction, speed, or motion. In aerodynamics, it is expressed as F, T (thrust), L (lift), W (weight), or D (drag), usually in pounds.

Pilot's Handbook of Aeronautical Knowledge, p. G-12

Taught in GEN-J Procedures, GEN-J Quick reference, GEN-E Concepts, GEN-J Concepts, AF-C Concepts, AF-F Concepts and 5 more.