What does the law of inertia state?

What does the law of inertia state?

• A. An object in motion tends to slow down
• B. An object remains at rest unless acted upon by an external force
• C. All forces acting on an object are balanced
• D. Objects move due to the force of gravity

Answer: (B)

The law of inertia, often associated with Sir Isaac Newton's First Law of Motion, asserts that an object will remain in its state of rest or uniform motion in a straight line unless acted upon by a net external force. This principle emphasizes the intrinsic property of objects to resist changes in their motion. An object at rest will not start moving unless a force pushes or pulls it, and an object in motion will not change its velocity unless a force causes it to do so. This concept is fundamental in understanding motion and force, as it explains why objects do not spontaneously start moving or stop moving on their own. The law implies that forces need to overcome an object's inertia to initiate motion or change its direction or speed. Therefore, recognizing that an object remains at rest or continues in motion in the absence of external influences clearly defines the law of inertia.

The law of inertia, often associated with Sir Isaac Newton's First Law of Motion, asserts that an object will remain in its state of rest or uniform motion in a straight line unless acted upon by a net external force. This principle emphasizes the intrinsic property of objects to resist changes in their motion. An object at rest will not start moving unless a force pushes or pulls it, and an object in motion will not change its velocity unless a force causes it to do so.

This concept is fundamental in understanding motion and force, as it explains why objects do not spontaneously start moving or stop moving on their own. The law implies that forces need to overcome an object's inertia to initiate motion or change its direction or speed. Therefore, recognizing that an object remains at rest or continues in motion in the absence of external influences clearly defines the law of inertia.