Newton's first law of motion: According to this law, a body continues to be in its state of rest or of uniform motion along a straight line, unless it is acted upon by some unbalanced external force.
Newton's first law of motion is one of the three laws formulated by Sir Isaac Newton to describe the motion of objects. It is also known as the law of inertia. Newton's first law states:
"An object at rest stays at rest, and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced external force."
Key points related to Newton's first law:
1. **Inertia:** The property of an object to resist changes in its state of motion is called inertia. An object at rest has zero velocity and will remain at rest unless a force is applied to it. Similarly, an object in motion will continue moving with a constant velocity unless acted upon by an external force.
2. **Unbalanced External Force:** If the net force acting on an object is zero, the object will maintain its state of motion. If there is a net force acting on the object, it will experience acceleration or deceleration, depending on the direction of the force.
3. **Frame of Reference:** The state of motion is relative to the observer's frame of reference. An object may appear at rest or in motion depending on the observer's perspective.
4. **Application:** Newton's first law explains various phenomena, such as why a book on a table stays at rest unless someone applies a force to move it or why a moving car comes to a stop when brakes are applied.
In summary, Newton's first law emphasizes the concept of inertia and describes the behavior of objects when no external forces are acting on them. It provides a foundation for understanding the principles of motion and is a fundamental concept in classical mechanics.
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Newton's first law of motion: According to this law, a body continues to be in its state of rest or of uniform motion along a straight line, unless it is acted upon by some unbalanced external force.
Answer:
Newton's first law of motion is one of the three laws formulated by Sir Isaac Newton to describe the motion of objects. It is also known as the law of inertia. Newton's first law states:
"An object at rest stays at rest, and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced external force."
Key points related to Newton's first law:
1. **Inertia:** The property of an object to resist changes in its state of motion is called inertia. An object at rest has zero velocity and will remain at rest unless a force is applied to it. Similarly, an object in motion will continue moving with a constant velocity unless acted upon by an external force.
2. **Unbalanced External Force:** If the net force acting on an object is zero, the object will maintain its state of motion. If there is a net force acting on the object, it will experience acceleration or deceleration, depending on the direction of the force.
3. **Frame of Reference:** The state of motion is relative to the observer's frame of reference. An object may appear at rest or in motion depending on the observer's perspective.
4. **Application:** Newton's first law explains various phenomena, such as why a book on a table stays at rest unless someone applies a force to move it or why a moving car comes to a stop when brakes are applied.
In summary, Newton's first law emphasizes the concept of inertia and describes the behavior of objects when no external forces are acting on them. It provides a foundation for understanding the principles of motion and is a fundamental concept in classical mechanics.