Newton's Laws

Motion

Action or process of moving or being moved

Inertia

Tendency of a body to maintain is state of rest or uniform motion unless acted upon by an external force

Balanced force

Equal forces acting on an object in opposite directions

Mass

Amount of matter in an object

Forces

A push or a pull that causes objects to move, change position or experience tension or compression.

Unbalanced force

When the forces on an object are pushing harder in one direction than in another, causing movement

Velocity

Speed of something in a given direction

Net force

The sum of all forces acting on an object

Acceleration

Rate of change of velocity

Gravity

Force of attraction between objects that is due to their masses.

Weight

Amount of gravity pulling down on an object

Newton's first law

An object at rest will stay at rest, an object that is moving will stay moving unless disturbed by an unbalanced force.

Newton's second law

Force is mass times acceleration

Newton's third law

For every action there is an equal and opposite reaction

Vector

A quantity that has magnitude and direction

Tension

Force exerted by a segment of rope or string

Equilibrium

When the net force of the object is zero

Normal Force

Force acting perpendicular to the contact surface

Gravitational force

The attractive force that exists between all objects with mass

Friction

A force that opposes motion between two surfaces that are in contact