# Dynamics

Dynamics is the part of Mechanics that is dedicated to understanding the origins of movements. In Dynamics, the study of Newton’s laws stands out.

**strength and movement**

The study of Dynamics was born with Aristotle ‘s observations regarding the movement of bodies. For this philosopher, velocity was directly related to a force that acted continuously on a body. If the force ceased, the velocity would be reduced to zero.

The idea of inertia proposed by Galileo Galilei and developed by Isaac Newton proves that velocity can be maintained even without the application of a force. **Objects moving with constant velocity are not subjected to the action of a resultant force. **Forces applied to objects generate changes in velocity , therefore, it is concluded that there is no acceleration without force application.

The studies developed by Newton are the pillars of Dynamics. Through Newton’s laws, we can understand how the interactions between bodies and the real origin of movements occur.

**Main themes of Dynamics**

**⇒ Newton’s Laws**

Newton ‘s Laws for Motion , as well as their applications, are crucial for the understanding of numerous everyday phenomena. Friction forces , elastic force , balance of bodies , among others, are unfoldings of these laws and are present in many everyday situations.

**⇒ ****Gravitation**

Gravitation analyzes and understands how the movements of planets and natural or artificial satellites occur . In Gravitation, Newton’s law of universal gravitation and Kepler’s laws for planetary motion stand out.

**⇒ ****Energy**

The study of Dynamics involves understanding the different forms of energy involved in motion. In studies related to energy, the understanding of kinetic and potential energy and the definition of mechanical work , power and energy conservation stand out.