14/08/2025
NEWTON'S LAWS -
Newton's laws of motion are a set of three physical laws that describe the relationship between force and motion. They are the foundation of classical mechanics and explain how objects move in response to forces.
Here's a breakdown of each law:
1. Newton's First Law of Motion (Law of Inertia):
States that; 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 force.
Inertia:
This law highlights the concept of inertia, which is an object's resistance to changes in its state of motion.
Example: A book on a table will stay put unless someone pushes it, and a ball rolling on a flat surface will continue rolling at the same speed and direction until friction or another force slows it down or changes its path.
2. Newton's Second Law of Motion:
The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. This is often expressed by the formula: F = ma (Force = mass x acceleration).
Force and Acceleration: This law establishes a quantitative relationship between force, mass, and acceleration.
Example: A heavier object requires a greater force to achieve the same acceleration as a lighter object.
3. Newton's Third Law of Motion:
For every action, there is an equal and opposite reaction.
Action-Reaction Pairs: This law emphasizes that forces always come in pairs. When one object exerts a force on another, the second object exerts an equal and opposite force back on the first.
Example: When you jump, you push down on the ground, and the ground pushes back up on you with an equal force, propelling you upwards.