g is 9.8whatever in m/s^2. If you choose inches/week^2 instead you'll get a different constant. Many fields use geometric mass units 1 gm = G (where G is the g

g is 9.8whatever in m/s^2. If you choose inches/week^2 instead you'll get a different constant. Many fields use geometric mass units 1 gm = G (where G is the grav constant in m/s^2) so you have g = 1 gm/s^2. Then you can drop a lot of constants for calculations.