Suspension Terminology

1)Sprung Weight: It is weight of all the parts supported by the spring including
weight of the spring.
   Un sprung weight: It is the weight of all the parts between the spring and rod
and the portion of spring weight it self.

Basic suspension movements:
1. Bouncing: The vertical movement of the complete body.
2. Pitching: The rotating movement of all the parts between the spring
and road and the portion of spring weight itself.
3. Rolling: The movement about longitudinal axis produced by the
centrifugal force during cornering.

2)Jacking Forces - Jacking forces are the sum of the vertical force components experienced by the suspension links. The resultant force acts to lift the sprung mass if the roll center is above ground, or compress it if underground. Generally, the higher the roll center, the more jacking force is experienced.

3)Spring Rate - The spring rate (or suspension rate) is a component in setting the vehicle's ride height or its location in the suspension stroke. When a spring is compressed or stretched, the force it exerts is proportional to its change in length. The spring rate or spring constant of a spring is the change in the force it exerts, divided by the change in deflection of the spring.

4)Travel-It is the measure of distance from the bottom of the suspension stroke (such as when the vehicle is on a jack and the wheel hangs freely) to the top of the suspension stroke (such as when the vehicle's wheel can no longer travel in an upward direction toward the vehicle).

5) Anti dive:

Anti Dive describes the amount the front of the vehicle Dives under breaking. As the brakes are applied, weight is transferred to the front and that forces the front to dive. Anti Dive is dependant on the vehicles center of gravity, the percentage of braking force developed at the front tires vs the rear, and the design of the front suspension. 

    Anti squat:Antisquat (A/S) is one of those mechanical tools that can add traction off the corners when used properly.