Great name, now I'm curious about it. As wikipedia states:

The mass of a body determines the momentum, p, of the body at given velocity, v; it is a proportionality factor in the formula:

p = mv
The factor m is referred to as inertial mass.

But mass, as related to the "inertia" of a body, can also be defined by the formula:

F=ma
Here, F is force, m is inertial mass, and a is acceleration.

Please interpret this in steem terms.