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HomeHomework HelpphysicsLaw of Inertia

Law of Inertia

The Law of Inertia states that an object at rest will remain at rest, and an object in motion will continue to move with a constant velocity, unless acted upon by an external force. This concept is a fundamental principle in Physics, describing the relationship between a body and the forces acting upon it. Understanding the Law of Inertia is crucial for analyzing and predicting the motion of objects in various situations.

beginner
2 hours
Physics
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Overview

The Law of Inertia is a fundamental principle in physics that explains how objects behave when forces are applied. It states that an object will remain at rest or in uniform motion unless acted upon by an unbalanced force. This concept is crucial for understanding motion and forces in our everyday l...

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Key Terms

Inertia
The resistance of an object to any change in its motion.

Example: A stationary ball will not move unless kicked.

Newton's First Law
A law stating that an object will remain at rest or in uniform motion unless acted upon by a force.

Example: A book on a table stays there until someone picks it up.

Balanced Forces
Forces that are equal in size and opposite in direction, resulting in no change in motion.

Example: Two people pushing a car in opposite directions with equal force.

Unbalanced Forces
Forces that are not equal, causing a change in motion.

Example: A child pushing a swing causes it to move.

Force
A push or pull on an object.

Example: Gravity is a force that pulls objects toward the Earth.

Motion
The change in position of an object over time.

Example: A runner moving from the start to the finish line.

Related Topics

Newton's Laws of Motion
A set of three laws that describe the relationship between the motion of an object and the forces acting on it.
intermediate
Friction
The force that opposes the motion of an object, affecting how inertia is experienced.
intermediate
Acceleration
The rate of change of velocity, which is influenced by the forces acting on an object.
intermediate

Key Concepts

InertiaNewton's First LawBalanced ForcesUnbalanced Forces