A push or pull on an object.
Attractive forces between two objects that depends on the masses of the objects, and the distance between them.
Forces that oppose the motion between two touching surfaces.
Force that opposes the motion of objects that move through the air.
For an object to float, the upward buoyant force must equal to the downward gravity force.
When an elastic material is deformed due to an external force, it experiences internal forces that oppose the deformation and restore it to its original state if the external force is no longer applied.
The force perpendicular to an objects surface that results in support.