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Examples include:

• a spacecraft with the rockets off
• the Moon's trajectory around the Earth, or the Earth's orbit around the Sun.

as opposed to the cases where other forces are acting, including:

• standing on the ground, sitting in a chair on the ground, etc. (gravity is cancelled by the reaction force of the ground)
• flying in a plane (gravity is cancelled by the lift the wings provide) - see below for special trajectories which form an exception
• atmospheric reentry, landing on a parachute: gravity is opposed by atmospheric drag
• during an orbital maneuverAn orbital maneuver is a change from one orbit to another, accomplished by applying thrust. In deep space it is called deep-space maneuver (DSM . Impulsive maneuvers Usually thrust is produced in short bursts, since this is the most efficient, it minimize in a spacecraft: the rocket provides thrustFor the land-speed record breaking car, see ThrustSSC and Thrust2 Thrust is a reaction force described quantitatively by Newton's Second Law when a system expels or accelerates mass in one direction to propel a vehicle in the opposite direction. Total for

More generally, the condition "not experiencing air friction" is dropped: in parachutingParachuting or skydiving is a recreational activity, competitive sport and method of deployment of military personnel (and occasionally, firefighters). Procedure A jump involves individuals jumping out of aircraft (usually an airplane, but sometimes a hel, freefall (skydiving) refers to the act of falling and delaying the opening of a parachute. FreeflyingFreeflying: a skydive made using any or any combination of the three flying axises ( roll, pitch, and yaw), in particular in other body positions than the more standard belly flying. Common freefly body positions include: Sit flying Tracking Head down Sta is skydiving in other body positions than the more standard belly flying.

With air friction acting upon an object in freefall the object will eventually reach terminal velocityAlternate uses: see terminal velocity (disambiguation). The terminal velocity of an object falling towards the ground is the speed at which the gravitational force pulling it downwards is equal and opposite to the atmospheric drag (also called air resista if the fall is from sufficient altitude and also otherwise uninterrupted.

Freefall is a popular webcomic written and drawn by Mark Stanley. It is a humorous science fiction story cataloguing the misadventures of the starship Savage Chicken and its crew: Sam, a lovable two-timing con artist; Helix, a childlike robot; and Florence, a genetically engineered "Bowman's Wolf" (DOGGY!).

Free Fall is a novel by William G. Golding.