As in what does D stand for and what is its equation?
As in what does V stand for and what is its equation?
As in what does A stand for and what is its equation?
As in what does T stand for and what is its equation?
As in what does S stand for and what is its equation?
Good question. They don't necessarily stand for different formulas. They represent the variables that you would find in the equations. For example, the equation v = vi + at contains the variables of initial velocity, final velocity, acceleration, and time.
D: displacement
V: velocity
A: acceleration
T: time