FISICA
1. Kinematics
1.1 Characteristics of mechanical phenomena
Mechanics is the part of physics that deals with the balance and movement of bodies
subjected to any force. A mechanical phenomenon is one associated with the balance or
movement of objects. Its main characteristics are:
- Distance. It is a numerical description to describe how far apart objects are. Distance can
refer to a physical length or an estimate based on some other criterion.
- The displacement. It is a vector that indicates the shortest distance from the initial
position to the final position of a body. The displacement of a body is the distance travelled
by a body in a specific direction.
-The speed. It is a vector of physical magnitude; it takes magnitude and direction to define
it. The absolute scalar value or velocity magnitude is called "velocity", being a coherent
derived unit, whose quantity is measured in meters per second.
- Acceleration. It is the rate of velocity change of an object with respect to time. The
acceleration of an object is the net result of any and all forces acting on the object.
Accelerations are qualities of vector quantities and are added according to the
parallelogram law.
- Speed. The speed or speed of an object is the magnitude of its velocity (frequency of
changing its position); for this reason, it is a scalar quality. Speed has dimensions of
distance divided by time. It is usually measured in miles or miles per hour.
- Time. Time is known as the physical magnitude with which we measure the duration or
separation of events.
1.2 Uniform rectilinear motion
A movement is rectilinear when the mobile describes a straight path, and is uniform when its
speed is constant in time, since its acceleration is null. We refer to it by the acronym MRU.
The MRU (uniform rectilinear movement) is characterized by: Movement that is performed
on a straight line. Constant speed; implies constant magnitude and direction. The speed
magnitude is called "speed or speed". It is an acceleration movement with zero acceleration
and the characteristics of this are obtained from the clearing of the following formula:
1. Kinematics
1.1 Characteristics of mechanical phenomena
Mechanics is the part of physics that deals with the balance and movement of bodies
subjected to any force. A mechanical phenomenon is one associated with the balance or
movement of objects. Its main characteristics are:
- Distance. It is a numerical description to describe how far apart objects are. Distance can
refer to a physical length or an estimate based on some other criterion.
- The displacement. It is a vector that indicates the shortest distance from the initial
position to the final position of a body. The displacement of a body is the distance travelled
by a body in a specific direction.
-The speed. It is a vector of physical magnitude; it takes magnitude and direction to define
it. The absolute scalar value or velocity magnitude is called "velocity", being a coherent
derived unit, whose quantity is measured in meters per second.
- Acceleration. It is the rate of velocity change of an object with respect to time. The
acceleration of an object is the net result of any and all forces acting on the object.
Accelerations are qualities of vector quantities and are added according to the
parallelogram law.
- Speed. The speed or speed of an object is the magnitude of its velocity (frequency of
changing its position); for this reason, it is a scalar quality. Speed has dimensions of
distance divided by time. It is usually measured in miles or miles per hour.
- Time. Time is known as the physical magnitude with which we measure the duration or
separation of events.
1.2 Uniform rectilinear motion
A movement is rectilinear when the mobile describes a straight path, and is uniform when its
speed is constant in time, since its acceleration is null. We refer to it by the acronym MRU.
The MRU (uniform rectilinear movement) is characterized by: Movement that is performed
on a straight line. Constant speed; implies constant magnitude and direction. The speed
magnitude is called "speed or speed". It is an acceleration movement with zero acceleration
and the characteristics of this are obtained from the clearing of the following formula:
