wat are the 3 laws of motion...simple understandable definition plz thanks :)
http://www.physics4kids.com/files/motion_laws.html
The three laws of motion, also known as Newton's laws of motion, describe how objects move and interact with forces. Here are simple and understandable definitions for each law:
1. First Law (Law of Inertia): An object at rest will stay at rest, and an object in motion will stay in motion with the same speed and direction, unless acted upon by an external force. In other words, an object will keep doing what it's doing until something makes it stop or change its motion. For example, a soccer ball will continue rolling on the ground unless a force, like kicking it or friction with the ground, stops its motion.
2. Second Law (Law of Acceleration): The acceleration of an object is directly proportional to the net force applied to it and inversely proportional to its mass. In simpler terms, if you push or pull an object with a greater force, it will accelerate more. Similarly, if an object has a smaller mass, it will also accelerate more for the same force applied. For instance, pushing a heavier box requires more force to make it move than pushing a lighter box.
3. Third Law (Law of Action and Reaction): For every action, there is an equal and opposite reaction. When one object exerts a force on another object, the second object exerts an equal but opposite force back on the first object. This means that any force applied will always have a reaction force. For example, when you swim, you push the water backward, and it pushes you forward, propelling you through the water.
By understanding these laws, we can explain and predict how objects move, interact, and respond to forces in the physical world. These laws have crucial applications in various fields, including physics, engineering, and everyday activities.