Classified in Physics

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FORCE: is any cause capable of deforming a body Changing its state of rest or motion.

MOTION: is a change of position of a body over time With respect to the reference system which is considered fixed.

We need to choose a body or a place which we consider To be permanently fixed. This body or place is called the reference system and the body which moves is referred to as a mobile.

Position: location of the mobile object in space with Respect to the reference point.

Displacement: the distance in a straight line between Two positions of the mobile object.

Space covered: the distance covered by the mobile Object on the trajectory.

Trajectory: an imaginary line joining the positions Which the mobile object goes through.

Linear motion: a straight-line trajectory.

Circular motion: a curve trajectory.

VELOCITY: is the distance/space covered by a mobile Object in the time.

FORCE OF FRICTION: is a force opposing motion, which Is produced by the interaction between the surfaces of two bodies which are in Contact.

The astronomical unit: is the average distance between The Earth and the Sun. Equivalent to 149 000 000 000 m. Used to measure Distances within the solar system. (au)

The light year: distance travelled by light in a Vacuum in one year. Equivalent to 9 460 000 000 000 000 m. It´s used to measure Distances between galaxies and clusters.

MASS: is the amount of matter in a body.

WEIGHT: is the force with which the Earth attracts a body

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