# Inertia

## Description

Inertia is the tendency of objects to maintain their state of motion (resist accelerations). This idea is essential for understanding motions on Earth but it is often counter-intuitive.

The Earth spins on its axis, completing a full revolution every day. By why does it do this? One of the most common misconceptions in physics is the belief that constant motion requires a constant force. So many people believe there must be some force in the Earth (e.g. gravity, centrifugal force) that keeps it spinning. In truth, no force is required because a fundamental property of mass is that it maintains its state of motion in the absence of external forces. This property is called inertia.

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#### What is Inertia by Veritasium?

Inertia is a learning resource for Force & Motion. It is available in the following format(s): Online/YouTube video. It is suited for 6th - College students.

#### What grade level is Inertia by Veritasium appropriate for?

It is designed for 6th - College students, but could be useful for students of other ages as well; please look at the description and images to determine suitability.

It is free!