PhyFl18–SS3.2.13 THe answer is: Inertia vs. force. Inertia is NOT force. It is a property of matter as Bill Nye says, but it is so much more. I’ve always thought that was a stupid thing to repeat over and over. Yes it is a property of matter, big deal. It is a measure of the RESISTANCE to change in velocity that na object has. The more the resistance the more the mass.