10 Examples of Newton's First Law in Real Life

The First law of Newton , Also called Law of Inertia, states that every body remains at rest or in uniform and rectilinear motion unless another body interposes and acts on it.

This means that all bodies tend to remain in the state in which they are initially, that is, if they are in motion they will tend to remain in motion until someone or something stops them; If they are still, they will tend to remain still until someone or something breaks their state and causes them to move.

The first law of Newton is represented when a skater falls and rolls several meters

In our days this statement may seem a little obvious, but it should not be forgotten that this discovery, as well as others also very relevant, among which we can mention the law of universal gravitation and studies on the decomposition of white light in Different colors, Isaac Newton did about 450 years ago.

Newton's laws, including this Law of Inertia, in addition to the Law of Interaction and Force, and the Law of Action and Reaction - and which together form the laws of Newton's Dynamics - came to explain Scientifically how objects and bodies with mass act and react to the presence or not of forces exerted on them.

10 Examples of the Law of Inertia

1- The car that brakes abruptly

The most graphic and everyday example that explains this law is the movement that our body makes when we go in a car at a constant speed and it stops abruptly.

Immediately the body tends to continue in the direction the car was driving, so it is thrown forward. This movement will be smooth if the car stops gently, but will be much more violent if it brakes suddenly.

In extreme cases such as a collision with another vehicle or object, the force exerted on the object (car) will be greater and the impact will be much stronger and more dangerous. That is, the body will maintain the inertia of the movement it brought.

The same happens to the contrary. When the car is completely stopped, and the driver accelerates abruptly, our bodies will tend to remain as they were (ie at rest) and that is why they tend to lean back.

2- Quiet carriage

When trying to push a car, at first it is very difficult, because, due to inertia, the car tends to remain still.

But once it is put into motion, the effort is much less to be done, since then inertia causes it to keep moving.

3- The athlete who can not stop

When an athlete tries to stop his career, it takes several meters to stop completely, due to the inertia produced.

This is most clearly seen in track competitions, such as the 100 meters smooth. Athletes continue to advance well beyond the goal.

4- Football theater... or not

In a game of soccer, there are usually falls between the players of both teams. Many times these falls may seem exaggerated, when one of the athletes laps several laps after the impact. The truth is that it does not always have to do with histrionics, but with the Law of Inertia.

If a player comes running at high speed across the field and is harshly intercepted by someone on the opposing team, he is actually interrupting the straight line movement that he was carrying, but his body will tend to continue in that same direction and at that speed. That's why the big fall.

5- The autonomous bicycle

The pedaling of a bicycle allows the same to continue advancing several meters without having to pedalear, thanks to the inertia produced by the initial pedaling.

6- Goes up and down

The roller coasters can climb steep slopes thanks to the inertia produced by the pronounced previous descent, which allows you to accumulate potential energy to climb again.

7- Trick or science?

Many tricks that look amazing are actually simple demonstrations of Newton's first Law.

This is the case, for example, the waiter who can pull the tablecloth from a table without falling objects placed on it.

This is due to the speed and force applied to the movement; Objects that were at rest, tend to remain that way.

8- Technical question

A deck on a finger (or on a glass) and, on the deck, a coin. By a rapid movement and force exerted on the deck, it will move, but the coin will remain still on the finger (or will fall into the vessel).

9- Cooked egg vs. raw egg

Another experiment to check the Law of Inertia can be done by taking a boiled egg and making it turn on itself on a flat surface and then stop the movement with the hand.

The boiled egg will stop immediately, but if we do exactly the same experiment with a raw egg, trying to stop the egg's rotating motion, we will observe that it continues to spin.

This is because the clear and raw yolk are loose inside the egg and tend to continue moving once applied force to stop it.

10- Block tower

If a tower with several blocks is made and the lower block (the one that supports the weight of the others) is struck with a mallet, it will be possible to remove it without the rest falling, taking advantage of the inertia. Bodies that are still tend to remain still.

Newton's Laws

The modern world could not be conceived as it is, were it not for the Very important contributions Of this Briton, considered by many as one of the geniuses Most important scientists of all time .

Perhaps without realizing it, many of the acts we perform in our daily lives explain and constantly confirm Newton's theories.

10 Examples of Newton's First Law in Real Life

In fact, many of the"tricks"that often amaze big guys at shows or TV shows are nothing more than a check and a phenomenal explanation of the laws of dynamics, especially Newton's first law or Law of Inertia.

Having already understood that if no other acts on a body, it will remain still (at zero speed) or indefinitely moving in a straight line with constant velocity, it is necessary to explain also that, all movement is relative, since it depends on the subject that observes and Describe this movement.

For example, the stewardess who walks down the aisle of an airplane in flight passing coffee to passengers, is walking slowly from the point of view of the passenger waiting in his seat for the arrival of his coffee; But for someone on the ground watching the plane fly, if I could see the stewardess, I would say that it is moving at a great speed.

Thus, movement is relative and depends, basically, on the point or reference system that is taken to describe it.

The inertial reference system is that which is used to observe those bodies on which no force acts and therefore remains still, and if it moves, it will continue to move at constant speed.

References

  1. Newton's Laws. Recovered from thales.cica.es.
  2. Biography of Isaac Newton. Recovered from biografiasyvidas.com.


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