* It's already at its lowest possible point: Think of a ball sitting on the ground. Gravity is pulling it downwards, but there's no room for it to move further.
* Another force balances gravity:
* Normal force: A book resting on a table experiences gravity pulling it down. However, the table pushes back with an equal and opposite force, preventing the book from falling.
* Air resistance: A parachute slowing a skydiver's descent is a good example. Air resistance increases as speed increases, eventually balancing the force of gravity.
* Buoyancy: A boat floating in water experiences gravity pulling it down, but the water pushes back with buoyant force, preventing it from sinking.
* It's in freefall, but experiencing zero gravity: Objects in orbit around the Earth are technically falling towards the Earth, but they are also moving fast enough horizontally to constantly miss it. This results in a state of freefall with no apparent downwards motion.
In short, an object won't move downwards under the effect of gravity if a counteracting force prevents it or if it's experiencing a state of freefall without a noticeable downwards motion.
