What is Speed:

Speed ​​is a physical quantity that expresses the relationship between the space traveled by an object, the time used for it and its direction. The word comes from Latin speedsters, velocitātis.

Since velocity also considers the direction in which an object is moving, it is considered a vector quantity.

Thus, speed implies the change of position of an object in space within a certain amount of time, that is, speed, plus the direction in which said movement occurs. Hence speed and speed are not the same.

Its unit in the International System of Units is the meter per second (m / s), and includes the direction of displacement.

Galileo Galilei was the first to scientifically formulate the concept of speed by studying the motion of bodies on an inclined plane, dividing the distance traveled by an object in units of time. Thus, he devised the concept of speed, which is nothing more than a variation of the distance traveled per unit of time.

On the other hand, as speed we also call lightness or promptness in movement. For example: "The speed with which you have come is impressive."

For its part, in mechanics it is called gait speed, that is, each of the driving positions of a motor vehicle.

Difference between speed and speed

Both speed and speed are considered physical quantities. However, while speed is determined based on the relationship of the space traveled by an object, the travel time and the direction, the speed only evaluates the relationship between distance and time. This means that velocity is a vector quantity and speed is a scalar quantity.

Reaction speed

In a chemical process, substances known as reactants are transformed into other so-called products. Thus, the reaction speed will be that with which a reactant disappears or, on the contrary, the speed with which a product appears. The discipline that is responsible for the study of reaction rates is chemical kinetics.

Average speed

Average speed, also called average speed, is the quotient of the space traveled by an object and the time it takes to cover the path.

Instantaneous speed

The instantaneous velocity is the one at which an object is moving at a given moment and point on its trajectory.

Constant velocity

Constant velocity is that which an object has when moving in a constant direction, with a constant speed, for a certain amount of time. Any change in direction will also mean variations in speed.

Angular velocity

Angular velocity is the measure of how fast a rotational motion occurs. As such, it expresses the angle described in the unit of time times the radius of a body rotating about an axis. Hence it is not a speed in the sense described above.

Speed ​​in physical education

Speed ​​in physical education is a physical ability that is part of athletic performance and is found in most physical activities, from running to throwing.

Tags:  Science General Expressions-In-English