Forces and Newton's Laws

The overall force acting on an object after all forces have been combined.

The SI unit of force.

An object remains at rest or moves with constant velocity unless acted upon by a net external force.

The net force on an object equals its mass multiplied by its acceleration (F=ma).

For every action force, there is an equal and opposite reaction force.

A force that acts without physical contact between objects.

The support force exerted by a surface, acting perpendicular to it.