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A to Z challenge 

Another good term to learn is INERTIA.

INERTIA is the force that holds the universe together. Literally. Without it, things would fall apart.

This is one of those terms that a TRUE definition can be clear as mud so I’ll offer you up a couple choices 😀

A) “The property of matter by which it retains its state of rest or its velocity along a straight line so long as it is not acted upon by an external force.”

B) “Inertia is the resistance of any physical object to any change in its velocity. This includes changes to the object’s speed, or direction of motion. An aspect of this property is the tendency of objects to keep moving in a straight line at a constant speed, when no forces act upon them.”

C) “Inertia is a passive property and does not enable a body to do anything except oppose such active agents as forces and torques.“

But Newton’s First law, the Law of Inertia really says it best for the layman “if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force.”

All that said, there are no #RailArt pictures for Inertia itself so I’ll offer up these random images 😀