The word kinematics comes from the Greek "kineema", which means movement. Kinetics comprises a branch of physics that studies the motion of bodies in space, regardless of the causes that produce it. Therefore, it is in charge of studying the trajectory as a function of time. In the study of kinematics, the first to describe movement were the Greek astronomers and philosophers, the first writings of kinematics were found around 1605 where Galileo Galilei is mentioned for his recognized study of the movement of free fall and sphere of planes. inclined. After several centuries this concept was expanded by a series of physicists until it developed and acquired its own structure.
Elements of kinematics
Observer: It is also called a frame of reference and its objective is to measure the movement traced by a particle.
Position: Corresponds to the geometric space that a body or object occupies in space.
Trajectory: It is a representation of the line that joins all the positions taken by the body. It can be classified as curvilinear and rectilinear.
Time: It is the one that indicates the duration of the movement of a body.
Speed and Speed: it is the speed at which a mobile changes position.
Types of movements in kinematics
Uniform rectilinear movement: are those where the trajectory is made in a straight line and the position of the mobile point is determined by a single coordinate. The speed remains constant and there is no change in acceleration (a) over time.
Accelerated uniform rectilinear motion: This motion is of constant acceleration and velocity varies linearly and position quadratically with time.
Simple harmonic movement: The body or object oscillates from one side to the other, this is due to a position of balance in a certain direction, it is important to know that the movements are made in equal time intervals.
Circular motion: The reference frame is at the center of the circular path.
Parabolic movement: They are two different rectilinear movements, one horizontal and the other vertical.
