Inertia is not restricted to an inanimate condition, consider social
Without suitable mass in each of a society's separate parts to resist overall momentum, the minority becomes fodder for majority trampling. footprints. foot molds/impressions/carcass.
Minorities can however gain significant inertia of their own and reverse the course of the majority.
Sometimes such a reversal will result in massive disruption and subsequent paradigm shifts so that the minority is joined by enough to become the majority.
Other times the minority is charged with the job of continuing to maintain group momentum alone, against the resistance of the majority.
And sometimes, the minority's mass equally matches that of the majority and momentum grinds to zero - stagnation.
These conditions hold true for: business, literature, communities, international relations, science and invention,...