Física

Normal force si the force that a surface exerts on bodies that are placed on top of it.

They are deformed when a force is applied and don't recover their original shape when that force is removed;they stay permanently deformed.

Start the motion,change velocity,stop the motion,change direction,change chape.

They aren't deformed when a force is applied.

It is a basic unit.It is invariable;it doesn't change with the place in the Universe where the body is found.Its unit in the SI is the kg.It's measured using sc

They are interactions between objects that touch:applied force,spring force,drag force,frictional force,normal force.

the newton (N)

It's a derived unit.It's variable;it depends on the gravity in the place where it is measured.Its unit in the SI is the newton.It's measured using a dynamometer

They are deformed when a force is applied,but they return to their original shape when that force is removed.

Frictional force is a foprce that opposes motion.It appears whenever a body moves along the ground,in the air,in water,ect.

Mass is the amount of matter in a body.It is a property of the body and it stays the same wherever it is.

It's the force with which a planet attracts bodies.The direction is always vertical and its sense is downwards, toward the center of the planet.

The force that moves something towards you.

FORCE is a push or pull in a particular direction.FORCE is a vectorial magnitude and is represented by a vector.

The force that moves something away from you.

They attract or repel,even from a distance:magnetic force,electric force and gravitational force.

Tension is the force exerted by a cable or rope when a body hangs from it or pulls on it.