If you are currently in a physics class, then you probably already know these things and should move on to finding the first equation. If you haven't and you are doing this to get a head start or you're just having fun, then you are sick and should be shot.

Okay, on to the physics.

Here's a list of the letters that you will see on this web site. (Not necessarily in order)

V- velocity in m/s (pretty easy to remember)

Vi- denotes an initial velocity

Vf- denotes a final velocity

a- acceleration in m/s2 (again, easy to remember)

x- most of the time will refer to distance in meters (sometimes it will just denote a function)

xi- denotes an initial position in meters

xf- denotes a final position in meters

d- denotes total displacement from the origin in meters.(xf-xi)

t- time in seconds

- designates an angle(usually where an object is launced from)

Note that some of the letters are in capitals while some of them are lower case. Don't dismiss this as something I did wrong. Capitals and lower case do matter. Sometimes you will find two of the same letter with the only difference being upper or lower case. These two letters denote different things. This is my official disclamer so that if you mess anything up, I can say,"I told you so".