Newton’s laws are a series of laws that are also known as Newton’s **laws of motion** . In these laws are three principles from which it was possible to give an explanation to a large number of the problems that had been raised in the field of **classical mechanics** , mainly those that were related to the **movement** of **bodies** , laws that achieved revolutionize the basic concepts of **physics** and the **movement** of bodies in the universe.

## What is Newton’s second law?

The **Newton ‘s second law** states that when a **body** exerts a **force** on a **second ****body** , the second makes force on the first whose **magnitude** is the same, but it ‘s going in the **opposite direction** to the first.

- What is Newton’s second law?
- What is your name
- Who proposed it
- History
- Statement
- Characteristics of Newton’s second law
- Formula
- Target
- Explanation
- Applications of Newton’s Second Law
- Experiments
- Examples
- Conclution

## What is Newton’s second law?

The second law consists in the explanation of what happens if a **net force** acts on a body that is in **motion** and whose **mass** does not have to be constant, which is capable of modifying the state of **motion** , generating a change in the **speed** or **direction** . The changes that are experienced in the momentum of a body are proportional to the **motive ****force** and at the same time develop in the direction of this. Consequently, there is a relationship between **cause** and **effect** , between **force** and **acceleration** since they are related.

## What is your name

Newton’s second law or **law of force** is also known as the ** fundamental law of dynamics.**

## Who proposed it

Newton’s second law was proposed by **Sir Isaac Newton** , an important and renowned English **mathematician** and **physicist** who managed to stand out as the most representative figure of the 17th century * “Scientific Revolution” *. In his studies on

**mechanics**, he created the three laws of motion, better known as

*, and these are considered today as the basic principles of*

**“Newton’s laws”****modern**

**physics**.

## History

The mathematical formulation was made and published by Isaac Newton in 1687, in his work Philosophiae Naturalis Principia Mathematica. In the third volume of Newton’s work, he himself succeeded in showing that, by combining the laws with his law of universal gravitation, Kepler’s Laws of planetary motion can be deduced and explained .

## Statement

The original statement reads as follows:

**” Change in motion is proportional to the motive force impressed; and is made in straights where the force is impressed. “**Translated into Spanish, it says the following: the **change** in **motion** is directly proportional to the printed **motive force** and occurs according to the straight line along which that force is printed.

## Characteristics of Newton’s second law

The most representative characteristics of Newton’s second law are the following:

- In the bodies that participate there are forces that are related by means of the law of
**action**and**reaction**. - The
**second law**is one of the basic laws of mechanics. - When there are cases in which the mass is not constant, the
**formula**of the**second law**can vary.

## Formula

The acceleration that a body of mass “m” acquires, under the action of a force “F”, is directly proportional to the force “F” and inversely proportional to the mass “m”.

**a = F / m**

## Target

The objective that Newton’s second law seeks is to determine the relationship that exists between the **force** , **mass** and **acceleration** of a body that is in **unidirectional motion** , and that is under the action of a **net external force** . Another objective is to verify the theory that tells us that force is equal to the compliance **mass** by the **acceleration** .

## Explanation

Newton’s second law has the function of **quantifying** the concept of **force** . It explains that the **net force** that is applied on a body is **proportional** to the **acceleration** that the body acquires. This law explains what happens if a net force acts on a body that is in motion, causing a change in the state of **motion** and changing the **speed** .

## Applications of Newton’s Second Law

The applications of this law are many and we can find it in fields of study, such as **medicine** , **zoology** , **geology** , **physics** , **chemistry** or **engineering** . In the area of medicine, mainly in **traumatology** , it is very useful to be able to know the forces to which we submit to our bones. In **zoology** , we can determine the force of an animal’s bite by measuring the acceleration suffered by an object that is put in the animal’s mouth to bite it. If we know the force that the **engine** exerts on a **car**to advance we can also know the value of the **acceleration** of the car itself through Newton’s second law.

## Experiments

The simplest experiment to do is to **push** an object and **measure** the **force** that has been applied and then analyze its **acceleration** . It can be done by placing a scale between your hands and the object to be pushed. The measurement given by the scale is the force in kilos applied to the object.

Using a **cart** of toy applies a **force** to go ahead, that is, it **pushes** and half of his career push it again to **double** the **speed** but so to continue his career.

## Examples

Some examples that we can mention about Newton’s second law are:

- The
**speed**a**rocket**needs to get into orbit is another example. - The calculation of the
**acceleration**of a**stone**in free fall reflects Newton’s claim. - The
**speed**that a**rocket**needs to be able to get into orbit is another example. - The
**force**that must be exerted on a**car**for this advance is another example of Newton’s second law. - The strength that a cart must have to be able to transport its load.

## Conclution

In conclusion we can say that Newton’s second law is one of the most basic laws in the area of **mechanics** , which is used to analyze the movements closest to the **surface** of the **earth** and also participates in the study of **celestial bodies.** .