ihawoirhvaiwdhv stop calling it extrapolation
extra. is an arithmetic/algebraic prediction and usually SIMPLIFIED SIMULATION OF COMPLEX SYSTEMS
what you're doing is (or should be - if you're not, do it) calculuses are in the realm of simulation prediction, because you have to uh, simulate the system, to do it.
The rundown is:
Extrapolation makes new data based only on that relevant data. Predicting new positions based wholly on positions of the past. Simulation is basing new positions off the system that made the old positions to begin with.