Abstract: Fluid Mechanics of Inertia incorporates all the variables of flight mechanics, interplanetary ballistics, perpetual motion, human powered transportation, and all aspects of fluid mechanics involving matter, energy, and motion, and includes elastic fluids into the definition of “fluids”. The “Mechanics” in Fluid Mechanics, may mistakenly be construed to be dynamics. Fluid Mechanics of Inertia is simplified calculus and converts calculus to trigonometry, logarithms, geometry, algebra, and basic functions. Fluid Mechanics of Inertia is a three dimensional math occurring in a time frame of no elapsed time although the locomotive animation of life is at full locomotive performance, the “snap-shot” elapsed time is zero, except where elapsed time is derived to elapse a time interval of a prescribed time allowance duration which is described, and there is no motion, thus “dynamics” does not occur in these problems since time is zero.