IPC Chapter 5

Four types of contact forces (also called mechanical forces):

contact force that pushes things together

contact force which pulls things apart

contact force which twists objects

contact force which causes portions of a material to distort or move in opposite directions along parallel planes

forces that are exerted between objects that are not touching

Three types of field forces

Gravitational acceleration near the earth's surface

The gravitational force is directly proportional to the product of the masses and inversely proportional to the square of the distance between the masses

Formula for linear momentum

Objects at rest remain at rest, and objects in motion continue in a straight line at a constant velocity unless acted upon by a net external force.

The acceleration of a system is directly proportional to the net force acting on the system and is inversely proportional to its mass.

For every external force exerted on a system by its surrounds, the system exerts an equal but opposite force on its surroundings

unit of force in the SI named in honor of the great English scientist