According to Newton's First Law, what condition is necessary for a body to either stay at rest or continue in uniform motion in a straight line?
Understand the Problem
The question is asking about Newton's First Law of Motion, which concerns inertia. It asks what condition must be met for an object to remain at rest or in uniform motion in a straight line. This essentially boils down to understanding what prevents a change in an object's state of motion.
Answer
A body will remain at rest or in uniform motion unless acted upon by an external force.
According to Newton's First Law, a body will either stay at rest or continue in uniform motion in a straight line unless compelled to change its state by the action of an external force.
Answer for screen readers
According to Newton's First Law, a body will either stay at rest or continue in uniform motion in a straight line unless compelled to change its state by the action of an external force.
More Information
Newton's First Law is also known as the Law of Inertia.
Tips
A common mistake is to think that an object in motion will eventually stop moving on its own. Newton's First Law states that an object will continue to move at a constant velocity unless acted upon by an external force, such as friction.
Sources
- Newton's First Law of Motion - The Physics Classroom - physicsclassroom.com
- What is Newton's first law? (article) - Khan Academy - khanacademy.org
- Newton's First Law of Motion: Inertia | Physics - Lumen Learning - courses.lumenlearning.com
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