Newton's law of motion is a fundamental principle in physics that describes the relationship between an object's motion and the forces acting upon it.
Newton's three laws of motion are:1. Law of inertia: An object at rest stays at rest and an object in motion stays in motion with a constant velocity unless acted upon by an external force.2. Law of acceleration: The acceleration of an object is directly proportional to the net force acting upon it and inversely proportional to its mass.3. Law of action and reaction: For every action, there is an equal and opposite reaction.
Newton's laws of motion can be observed in various everyday situations. For example, the first law explains why a book stays on a table until someone picks it up. The second law can be seen when a car accelerates when the gas pedal is pressed. The third law can be observed when a balloon is inflated and then released, causing it to fly in the opposite direction.
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. According to Newton's second law, an object's mass affects its acceleration, while its weight does not. This is because weight depends on the gravitational force, which is constant on Earth, while mass is an intrinsic property of an object.
Newton's laws of motion are applicable to most objects and movements, but they have some limitations. They are most accurate for objects moving at speeds much slower than the speed of light and for objects that are large enough to be observed and measured. At the atomic and subatomic level, other principles such as quantum mechanics come into play.