An object at rest will remain at rest and an object in motion will remain in motion unless acted upon by an unbalanced force.

Proves that different masses accelerate at the same rate but at different forces.

For every action, there is an equal opposite reaction.

the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other.

a quantity that has both size and direction

Inertia

Gravity, electricity, magnetism, friction

Less inertia

the resistance that is created between any two objects when they are sliding against each other.

the force of attraction between any two objects that depends on the masses of the objects and the distance between them.

When the forces acting on an object are not equal and the motion of the object changes.

F= m x a

More Inertia

the force which resists the motion of a ball or wheel and is the weakest types of friction.

A measure of the force of gravity on an object.

When the forces acting on an object are equal and opposite direction so the object does not move.

the vector sum of all forces acting on an object

the force that is equal in strength and opposite in direction to the action force and which acts simultaneously on whatever is exerting the action force

the friction that exists between the layers of the fluid when they are moving relative to each other.

mass

The tendency of an object to resist changes in motion.

Acceleration

one of the pair of forces described in Newton's third law. The action is equal in strength and opposite in direction to the reaction force. The action acts simultaneously on whatever is exerting the reaction force.

the frictional force that acts between the surfaces when they are at rest with respect to each other.

a push or pull