What is Inertia?


Have you ever felt like you are being pushed forward when your car brakes suddenly? This is caused by inertia. Inertia is a tendency of an object to maintain its speed. In other words, the object wants to keep a constant speed. If you push a brick along the floor (assuming there is no friction) , then the brick will go on and on and on until someone stops it.

Maybe you might want to complain: But when I move bricks across the floor in real life, then why does it keep stopping? This is because there is opposing force acting on the brick known as friction. Friction is a force that is caused by rubbing 2 objects together. It can also create heat.


Long time ago, people said that objects have a tendency to stop. Then, in the 1700s, Sir Isaac Newton discovered inertia and proposed that objects actually have a tendency to maintain their speed. Eventually, this is also another of Newton’s laws.

I’m quite sure that I will continue to make blogs about physics, science, theories, etc. I promise you it will be fun! 😁


Thank you.

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