Free Body Diagrams and Net forces

Gravitational Force (Fg)

It is the downward force.

Applied Force (Fa)

It moves the object forward.

Free Body Diagrams

A diagram showing all the forces acting on an object

Normal Force (Fn)

A force exerted by one object on another in a direction perpendicular to the surface of contact, usually opposite of gravity.

Compression

A force that pushes on or squeezes a material.

Drag

Backward acting force

Thrust

Forward force

Balanced Force

The net forces acting on an object in a certain direction. (X,Y, or Z) are equal to zero and the object will either remain stationary or move at a constant velocity.

Unbalanced Force

The net forces acting on an object in a certain direction. (X,Y, or Z) are not equal to zero, which results in the object accelerating or decelerating.

Net Force

The overall force acting on an object.

Tension

(physics) a stress that produces an elongation of an elastic physical body

Frictional Force

air resistance (wind) and backward force.