Conversation of the Day

Dad: Hey!
Me: Yes?
Dad: First you were over here, now you're over there.
Me: Yes! I changed my location over time using a process I call "movement".

If you want to model "movement" you could do worse than considering the following equation:

ds/dt = v

Where:
s = position
v = velocity
t = time
and ds/dt is the first order vector differential of position with respect to time.