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Every action force is able to alter the state of rest or motion of bodies or cause them any deformation
A newton is the force to be applied to a body of one kilogram of mass to increase its speed 1 m / s every second
1N = 1kg · 1 m / s
Weight is the force of gravitational attraction the earth exerts on a body
Resultant Force: the force on a body that produces the same effect as the system of all forces acting on, ie the vector sum of the forces of the system.
Balance of power: We say that two or more forces applied to the same body are in equilibrium when their effects cancel each other, ie when their is zero
Law of inertia: a body remains at rest or uniform rectilinear motion if no force acts on it, or if the resultant of forces acting is zero.
Basic Law of the dynamics: If a body acts on a resultant force, this becomes an acceleration directly proportional to the applied forces with the mass of the body's constant propocionalidad
Action and reaction law: if a body exerts a force we call action, on another body, this in turn, exerts force on the first one, which we call reaction, with the same module and same direction, but opposite.
Normal Force: the force exerted by the bearing surface of a body on this
Friction: the force that appears in the contact surface of bodies, opposes the movement of these.

Resultant Force
The result is the applied force is used in problems where there are same direction and different meaning when the meaning is the same, use = R = F1 + F2
P = m · a
Law of dynamics:
F = m · a

F-Fr = m · a
Friction =
F-Fr = m · a
x = Xo + Vot + 1 / 2 at 2

a = V-Vo / t = m/s2
Acceleration (do not know T, but we know V e):
V 2-V 2= 2ax
a = V 2-Vo
2/ 2x
Time (knowing (v))
V = Vo + at
T = V-Vo / a

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