Inertial mass is a measure of a body's resistance to being accelerated: you have to push harder on a high-mass body than on a low-mass body to get it to accelerate by a given amount. For example, if t...Inertial mass is a measure of a body's resistance to being accelerated: you have to push harder on a high-mass body than on a low-mass body to get it to accelerate by a given amount. For example, if two identical bodies each have a gravitational mass mg and are separated by a distance r, then the gravitational force between them is given by Newton's law of gravity: F=Gm2g/r2.
