Newton's First (1st) Law of Motion with daily life examples
Channel: Physics Partner
Date: 2023-04-21

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Notes 

Sir Isaac Newton, one of the greatest mathematicians and physicists of all time, formulated three laws of motion that revolutionized our understanding of the physical world. Newton's first law of motion, commonly referred to as the law of inertia, states that an object at rest will remain at rest, and an object in motion will continue in motion at a constant velocity, unless acted upon by an external force. This law of motion has several real-life applications that can be observed daily.

One of the most common examples of Newton's first law of motion is the behavior of a moving vehicle when the brakes are applied suddenly. According to physics, the vehicle will continue to move forward due to the inertia of the moving parts, until the force of the brakes is enough to bring it to a stop. Objects in motion, such as a vehicle or a person on a bike, possess a natural tendency to keep moving forward unless an external force applied to them.

Another example of Newton's first law of motion is the behavior of a skateboarder performing stunts. A skateboarder maintains balance on the board by using their own weight to counteract the force of gravity. However, when the skateboarder attempts to curb, change direction or stop, they rely upon external forces to change the direction of their motion.

The behavior of a ball rolling down a hill also demonstrates Newton's first law of motion. The ball tends to keep rolling down the hill at a constant speed until it reaches the bottom, where it stops due to the force of friction between it and the ground. Similarly, the movement of a ceiling fan highlights Newton's first law of motion, as it keeps rotating endlessly unless an external force is applied to it.

Lastly, the law of inertia is evident in the behavior of astronauts in zero-gravity conditions. In space, objects move freely without any external force because no force is acting against them, causing them to continue moving at the same velocity with no hindrance. Newton's first law is, therefore, crucial to understanding the behavior of objects in space and helps us predict their trajectories.

In conclusion, Newton's first law of motion, also known as the law of inertia, is fundamental to our understanding of physical phenomena that occur around us. There are countless examples in our daily life that demonstrate this fundamental idea and highlight the significance of the first law of motion. Newton's law of inertia helps us comprehend a variety of physical behaviors and is an impressive introduction to the profound principles of physics.