Force
An action that can change the motion off an object
Force
Work against motion
frictional forces
The amount of matter in an object
Mass
the act or process of changing positions or place
Motion
The unit used to Measure force
Newton
Forces that are not opposite and equal
Unbalanced Force
Is a force between any two objects
Gravitational Force
States that an object at rest unless it is acted upon by on unbalanced force
Newton's 1st law
is the transfer of energy when an applied force moves an object over a distance
Work
Is found by dividing the change in the velocity of the object by the change in time
Acceleration
Forces that are opposite in direction and equal
Balanced Force
the combination of all the forces acting on an object
Net force
A measure of speed in a given direction
Velocity
The force due to gravity - equal to the product of the objects mass and the acceleration of gravity
weight
The tendency of an object to resist a change in motion
Inertia
The force exerted by the machine
Resistance force
States the forces or an object is directly related to the net force
Newton's 2nd law
the unit used to measure work
Joule
Machines that work with one movement
Simple machine
The force applied to a simple machine
Effort force
States that force occurs as equal and opposite pairs
Newton's 3rd law
Occurs when the force of air resistance become large enough to balances the force of gravity
Terminal velocity
Is the number of times a machine multiplies the effort force
Mechanical advanage