According to Newton's First Law, what happens to objects in motion?

According to Newton's First Law, what happens to objects in motion?

• A. They accelerate indefinitely
• B. They change direction constantly
• C. They remain at rest or in motion unless acted upon by another force
• D. They explode if no force is applied

Answer: (C)

Newton's First Law of Motion, often referred to as the law of inertia, states that an object will remain at rest or continue in motion at a constant velocity in a straight line unless acted upon by an external force. This means that if there are no unbalanced forces acting on an object, it will not change its state of motion. The concept of inertia is key here, as it describes an object's resistance to changes in its motion. For example, a ball rolling on a flat surface will keep rolling, continuing in the same direction at the same speed until friction or another force intervenes to slow it down or change its course. Thus, the law highlights the importance of external forces in altering an object's state of rest or uniform motion. Understanding this principle is fundamental in physics, as it lays the groundwork for more complex concepts in dynamics and helps explain why motion occurs the way it does.

Newton's First Law of Motion, often referred to as the law of inertia, states that an object will remain at rest or continue in motion at a constant velocity in a straight line unless acted upon by an external force. This means that if there are no unbalanced forces acting on an object, it will not change its state of motion.

The concept of inertia is key here, as it describes an object's resistance to changes in its motion. For example, a ball rolling on a flat surface will keep rolling, continuing in the same direction at the same speed until friction or another force intervenes to slow it down or change its course. Thus, the law highlights the importance of external forces in altering an object's state of rest or uniform motion.

Understanding this principle is fundamental in physics, as it lays the groundwork for more complex concepts in dynamics and helps explain why motion occurs the way it does.