Friction, when moving sideways.
Upthrust when you are trying to go down.
gravity when you are trying to go up
Friction and Air Resistance
The force that slows down moving objects is friction, the action of two objects rubbing against each other. This scenario illustrates the action of Newton's Second Law.
Whenever any object moves through air (eg an aeroplane) it observes four forces 1 Drag force 2. lift force 3.weight of object 4.thrust created by the propellers or engine of the object. The drag force is directed opposite to the direction of moment of the object and slows the object down.
friction slows it down
The vertical components of the air resistance acts vertically down on it. This adds to the effect of the gravitational force. Therefore net force is increased - it slows down more rapidly and so does not rise as far.
gravity
Friction and Air Resistance
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.
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.
The force that slows things down in air or water is called drag. It is caused by the resistance of the air or water molecules against the motion of an object moving through them.
The limiting frictional force is the force that slows down the tennis ball on the roller coaster.
Whenever another force - usually friction - slows it down.
Air resistance or drag is a force that slows down objects moving through the air. It is caused by the friction between the object and the air molecules it encounters, which creates a resistive force that opposes the object's motion.
Friction
friction
water resistance