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Force
A push or pull exerted on an object
Free body diagram
a picture showing all the forces acting on an object, labeled with vectors
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 outside force.
Newton's Second Law
Force = mass x acceleration
Newton's Third Law
For every action there is an equal and opposite reaction
Gravity
A force of attraction between objects that is due to their masses.
Acceleration due to gravity (g)
9.8 m/s^2
Unit of force
Newton (N)
Unit of mass
Kilogram (kg)
Unit of acceleration
meters per second squared
Friction
A force that opposes motion between two surfaces that are in contact
Air resistance
force that opposes the motion of objects that move through the air
Inertia
The tendency of an object to resist a change in motion
Equation for Mass
Force / acceleration
Equation for Acceleration
Force / mass or (v2 - v1)/t
Unit for speed
meters per second (m/s)