Kinematics is the branch of classical mechanics that deals with the study of the laws of motion of bodies, independently and without taking into account those causes that produce it, that is, kinematics, focuses and limits itself to studying the trajectory of a body as a function of time. The word kinematics has its origin in a Greek term that precisely means in that language to move.
To carry out its study and its purpose, kinematics uses a coordinate system that is very functional when describing the trajectories of bodies. The aforementioned system is called Reference System and it is manifested as follows: speed is the rate with which the change in position is marked, acceleration on its side, is the rate with which the speed changes, then speed and acceleration are the two main quantities that will describe how the position of a body changes as a function of time.
Now, the movement of a body can be described according to the values of velocity and acceleration, which are vector magnitudes, and can give rise to: if the acceleration is zero, it gives rise to uniform rectilinear motion, the velocity remaining constant over time , if the acceleration is constant with the same direction as the velocity, it gives rise to the uniformly accelerated rectilinear motion, varying the velocity over time, while, if the acceleration is constant with a direction perpendicular to the velocity, it causes the circular motion uniform, the speed being constant and changing direction over time. We can also find the parabolic motion, when the acceleration is constant and is in the same plane as the velocity and the trajectory, but if it occurs in reverse, we can talk about the Coriolis effect and finally, we find the simple harmonic motion , which is a back and forth movement, just like that of a pendulum.
