the force with which something moves ( \=mass x velocity)
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mass
the amount of matter in an object
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Velocity
the speed of an object in a particular direction
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Inertia
The tendency of an object to resist a change in motion
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Newton's Second Law
Force equals mass times acceleration
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Newton's Third Law
For every action there is an equal and opposite reaction
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Newton's First Law
An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
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Force
A push or pull exerted on an object
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Net Force
The sum of all forces acting on an object
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Free Body Diagram
a diagram showing all the forces acting on an object
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Newtons
The unit of measurement for force
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Speed
The distance an object travels per unit of time
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Motion
An object's change in position relative to a reference point.
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reference point
A place or object used for comparison to determine if an object is in motion
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Friction
A force that opposes motion
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rolling friction
friction that occurs when an object rolls over a surface
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static friction
a friction force that acts on objects that are not moving
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sliding friction
friction that occurs when one solid surface slides over another
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fluid friction
friction that occurs as an object moves through a fluid
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Acceleration
The rate at which velocity changes
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Balanced forces
All forces acting on an object are equal, resulting in no change in motion
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Unbalanced forces
Forces that produce a nonzero net force, which changes an object's motion
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