In this project we discuss the main aspects and results of the phenomenological model MOND (MOdified Newtonian Dynamics). The MOND proposal is based on the modification of Newton's second law, delimiting two acceleration regimes. Thus, we were able to explain in good approximation the phenomenon of mass discrepancy, seen in Weak Gravitational Lenses and in the RotationAl Speed Curve in Spiral Galaxies. To verify the success of the model, we developed a Program with the objective of collecting, organizing and plotting the speed data of the 175 galaxies of the Online Repository SPARC. Using these data, the parameters of the theoretical curves were adjusted by linear regression, allowing to verify the correct functioning of the program, as well as the determination of the value of critical acceleration $a_0$ that delimits the two dynamic regimes of the MOND model.