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6th - College
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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.
Posted
Mar 2023
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Radiation
7th - College