Gravity
If there was no force then there would be no balance to keep things in place
gravity
Friction is a force, which (usually) tends to slow moving things down.
The special force that stops things from moving or slows them down is called friction. Friction is the resistance encountered when one object moves over another, creating heat and wearing down the surfaces in contact.
Friction and Air Resistance
Gravity.
Friction is the force that can cause things to slow down. When two surfaces are in contact, friction creates resistance that opposes the motion of the object, leading to a decrease in speed.
The force that slows down moving objects in water is called drag force. Drag force occurs due to the resistance of water molecules as they collide with the moving object, causing it to slow down.
Friction is the force that slows things down in water. When an object moves through water, the water molecules create resistance, causing the object to slow down. This resistance is known as drag force, which depends on the shape and speed of the object moving through the water.
Objects fall down due to the force of gravity. Gravity is a fundamental force that pulls objects towards the center of the Earth. When an object is unsupported, gravity causes it to accelerate downwards until it reaches the ground.
The force responsible for slowing down an object in motion is typically friction. Friction is the resistance force that opposes the motion of an object as it moves across a surface. This force converts the kinetic energy of the object into heat energy, causing it to slow down.
Friction. Since "air" is not a vacuum, it takes energy to move through it in the same way it takes energy to move through water. (though this is a more drastic example.) If there is no active energy source to keep an object pushing past the particles in the air (like a propeller or rocket) it will slow down as it loses momentum.