Definition
The rate at which a freely falling object speeds up as it falls toward Earth, caused by gravitational attraction. Near Earth's surface this rate is approximately 32.2 feet per second per second (9.81 meters per second per second), and is represented by the symbol g.
Plain English
If you drop something and ignore air resistance, it falls faster every second. The amount it speeds up each second is what this term describes — about 32 feet per second of additional speed for every second it keeps falling.
Context Anchor
Seen in aviation maintenance and basic aircraft physics when discussing weight, force, falling objects, and aircraft loads.
Derivation
From Latin gravis, meaning 'heavy.' Gravity is the pull that makes heavy things fall, and acceleration is how quickly their speed changes. So the phrase literally describes how quickly things speed up because of the Earth's pull.
Why Pilots Care
It supplies the reference value needed to calculate lift, drag, thrust requirements, takeoff distances, and g-loads during flight maneuvers.
Analogy
If you drop a wrench from rest and ignore air resistance, after one second it is moving about 32 feet per second downward. After two seconds, it is moving about 64 feet per second downward.
Grounding Statement
If you step off a ladder, after one second you are falling at about 32 ft/sec; after two seconds, about 64 ft/sec — that steady increase is acceleration due to gravity.
Intuition Check
Do not think of this as the speed of gravity. It is the rate at which a freely falling object’s downward speed increases near Earth.
Example Sentence 1
Load factor is expressed as a multiple of the acceleration due to gravity, so a 3 G turn means the aircraft structure feels three times its normal weight.
Example Sentence 2
Mechanics apply the acceleration due to gravity value when verifying that control surfaces are properly balanced.