# Three Laws of Motion

**Topics:**Newton's laws of motion, Classical mechanics, Force

**Pages:**2 (596 words)

**Published:**January 4, 2011

Isaac Newton’s first law, an object in motion tends to stay in motion with the same speed going in the same direction unless acted upon by an unbalanced force. An object at rest tends to stay at rest unless acted on by an unbalanced force, is also known as “the law of inertia.” Galileo Galilei developed the concept of inertia years before Isaac Newton was born. “The law of inertia” states that every moving object possesses inertia which keeps it moving unless an external force acts upon it. Basically this law means that all objects naturally want to stay in motion. Objects avoid change in their state of motion unless an outside force causes it (Encyclopedia of Earth and Physical Sciences, 2009)

The second law of motion developed by Isaac Newton states that acceleration is produced when a force acts on mass.” The greater the amount of mass, the more force needed to accelerate the object.” (online). This law is often represented by the mathematical equation, F=ma (force equals mass times acceleration). This means that an object with more mass takes more force to move the...

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