Newton's First Law of Motion
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.
Newton's Second Law of Motion
F=ma
Newton's Third Law
Action-Reaction
Inertia
Resistance of an object to change its motion
Unbalanced Forces
ALWAYS cause a change in motion. They are NOT equal in size, but ARE opposite in direction.
Balanced Forces
DO NOT cause a change in motion. They are EQUAL in size and ARE opposite in direction.
Mass
The amount of matter in an object
Force
A push or a pull resulting from the interaction of an object
Acceleration
The change in speed over time
Gravity
This force pulls all objects to the ground with the same acceleration
Friction
This opposes motion and slows objects down
Newton's 3rd Law of Motion
For every action, there is an equal and opposite reaction.
Forces always exist in ..
pairs
Newtons (N)
Unit of force
Objects with smaller masses have
Less inertia
Objects with larger masses have
More inertia
Velocity
Speed with a given direction
Law of Inertia
First Law of Motion
Law of Action-Reaction
Third Law of Motion
Weight
A measure of the force of gravity on an object