Newton's first law states that an object at rest will remain at rest, and an object in motion will remain in motion at a constant velocity, unless acted upon by an external force. Newton's second law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. Newton's third law states that for every action, there is an equal and opposite reaction.
Newton's laws provide a framework for understanding how objects move and why they move the way they do. The first law explains why objects stay at rest or in motion, the second law explains how the forces acting on an object affect its motion, and the third law explains the relationship between action and reaction forces.
Mass is a measure of the amount of matter in an object, while weight is a measure of the force of gravity acting on an object. In terms of Newton's laws, mass is used in the second law to calculate an object's acceleration, while weight is used in the first law to explain why objects at rest stay at rest.
Yes, Newton's laws can be applied to all types of motion, from the motion of planets in space to the movement of objects on Earth. They are fundamental principles of physics and can be applied to a wide range of scenarios and phenomena.
Inertia is an object's resistance to change in its state of motion. Newton's first law is often referred to as the law of inertia because it explains how objects at rest or in motion will maintain their state unless acted upon by an external force. In other words, inertia is a result of Newton's first law.