Force
an action that can change the motion of an object. A push or a pull is an example of a force.
Force
the unit used to measure force
Newton
is a force between any two objects. The strength of the force is related to the mass of the objects and the distance between them.
Gravitational force
is found by dividing the change in the velocity of the object by the change in time
Acceleration
the combination of all of the forces acting on an object.
Net Force
states that an object at rest will stay at rest unless it is acted upon by an unbalanced force. An object in motion will continue to move in the same direction and with the same speed unless acted upon by an unbalanced force.
Newton's 1st Law
work against motion
Frictional forces
a measure of speed in a given direction
Velocity
forces that are opposite in direction and equal in size, cause no change in motion, and the net force equals 0.
Balanced Force
states that the acceleration, a, of an object is directly related to the net force, F, applied to the object and inversely related to the mass, m, of the object. Shown by F = ma
Newton's 2nd Law
the force applied to a simple machine
Effort Force
the distance an object moves per unit of time
Speed
forces that are not opposite and equal. Forces that cause a change in motion.
Unbalanced Force
states that forces occur as equal and opposite pairs. For every action force there is an equal and opposite reaction force.
Newton's 3rd Law
the force exerted by the machine
Resistance Force
the tendency of an object to resist a change in motion
Inertia