Physics Fundamentals: Motion and Forces Explained

rReference point system or set of points in space about which describes the motion of a body.
movement is the change in position of a body co l respectoa reference system, otherwise we say that is at rest.
point position of the space occupied by a mobile in an instant
path formed by successive fucking line holding a mobile in motion.
Deplazes vector is the vector that joins two points on a trajectory.
distance is the length, averaged over the path, which exsist in tween the initial and final pisiciones.
rapid speed with which a mobile changes its position.
cocientre average speed between the distance traveled by the mobile and the time spent on ecoregions.
intantania speed has a mobile speed at any given time.
uniform rectilinear motion (MRU) when a mobile Suge a straight line and its speed is constant at all times.
acceleration: speed with which a mobile changes its speed.
uniformly accelerated rectilinear motion (MRUA): when a mobile follows a straight path and its acceleration is constant and nonzero.




uniform circular motion (MRU): When a mobile moves with a circular path and its angular velocity is constant amntiene.
------------------------- ------------------------ Forces
force: any action capable of altering the state of rest or motion of bodies or cause them any deformation.
weight: gravitational force of attraction the earth exerts on a body. P = m. G g = 9.8
resultant force: force on a body that produces the same effect as the system of all acting on the furzen ie the vector sum of the forces of the system. composition of forces is the procedure for calculating the Furze resulting from forces the system components.
Balance: when two or more forces applied to a body ism effects neutralize each other, ie when the resultant is zero.
a body is at rest or uniform rectilinear motion if no force acts on or if the resultant of forces acting is nula.La property of matter can not change its state of rest or motion by itself receives the name of inertia.
acts on a body if a net force, it acquires an acceleration directly proportional to the applied force with the mass of body proportionality constnte. F = m. To
if a body exerts a force on another body call this action in turn exerts on the first reactions lamamos another force, with the same module and the same direction but opposite.
normal force: N: force exerted by apollo surface of a body on this.
friction force: F; force that appears on the surface of the bodies contcto opposes the movement of these.