How can i calculate velocity when given time and distance measurements?
i'm trying to get the average velocity of these : i don't necessarily need anyone to do the work, i more so need the formula and a simple demonstration !
distance (m)
average time (s)
0.5
0.5
1.0
2.1
1.5
3.3
2.0
5.5

First of all ... there isn't a shred of information about direction here,
so you're in no position to talk about 'velocity'.  That's not just a
big word for 'speed'.  They're two different things.  So let's just talk
about 'speed'.

Average speed  = 

                 (distance covered in some time)
divided by
                 (time to cover the distance).

You're given a distance and a time ?  Great !  Divide the distance
by the time, and you have the average speed during that time.

And don't forget about the units.

(0.5 meter) in (1.5 seconds) ?

Average speed = (0.5 meter) / (1.5 seconds)  =  1/3 meter/second .
.
.
etc.