speed of a motorcycle. The image shows two planes that look like they are standing, one says to another, and a shepherd on the hill is said to be moving very fast aircraft.
move if something changes position.
The movement is relative. It is different in each observer.
Rest is also relative. It is different in each observer, the rest is also relative. It is different in each observer.
Rest is also relative. It is different in each observer, the rest is also relative.
.. .. Description of movement
To describe a movement we need an observer, a point of reference and a reference system. At a position of a point is given by two coordinates.
.. The course also is relative ..
The trajectory of a mobile depends on the reference system used by the observer.
.. speed ..
a mobile speed at each instant is represented by an inventor tangent at each point of it. Is the instantaneous speed inventor.
.. .. Average speed
Average speed = total distance covered space / time spent in traversing it.
* If space measured in meters and time is expressed in meters traveled by each passing second, ie, "meters per second." (M / s)
* If the space is measured in kilometers, and time in hours, average speed expressed in miles, "miles per hour." (Km / h)
- The instantaneous velocity of a moving body at any given time tells us how fast it moves, direction and sense of movement.
- The average speed of a moving more or less tells us what average speed has made a certain way.
rectilinear movements .. ..
Depending on the shape of the trajectory, a motion can be rectilinear or curvilinear.
When a mobile path is straight, the speed always has the same direction. This type of movement is called rectilinear.
curvilinear movement .. ..
When a mobile path is curved, the speed always leads the direction tangent to the trajectory at each point. In this type of movement is called curvilinear motion.
.. .. The magnitude force
Push, pull, hold, pull, attract, ...
All these words describe the action of one body on another, and in physics we refer to them with a single term: force. We observe
forces by deformation or velocity changes produced by these forces on the bodies.
· Calls forces to any action that changes the speed of the bodies (acceleration) or deformed.
· The forces exerted always in one direction and meaning, and are applied to specific points of the bodies. Therefore, the force is a vector quantity, measured in the international system in the unit Newton (N).
..
as interaction forces ..
forces always come in pairs, as a result of the interaction between bodies. When a body does a force on another, this in turn has the same strength but opposite direction.
.. .. Inertia
A body tends to continue in its state of rest or rectilinear motion with constant velocity a menos que se aplique una fuerza. Es lo que en física se llama ley de inercia.
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