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- You all must know these ways when talking about isolating a variable into an equation:


1.to reflect the variable x = reflejar la variable x (cambiar x por -x)

2.to
clear the variable x = despejar la variable x (mat) / borrar el contenido de la variable x (comp.)

3.to
isolate the variable x = despejar la variable x (dejándola a un sólo lado de la ecuación)

4.to
solve for the variable x = resolver para la variable x





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- Primer de tot mira aquests dos videos :






- Copia les següents preguntes i contesta-les a la llibreta :


1. Quina diferència hi ha entre un triangle isósceles i un d’equilàter?. A més de contestar a la pregunta dibuixa un triangle de cada tipus a la llibreta.


2. Quina és la característica més destacable de qualsevol quadrat?. A més de contestar a la pregunta dibuixa un quadrat a la teva llibreta fent servir el regle.


3. Mira el següent video i després contesta a les preguntes que hi ha a sota del video.


 3a. Quina diferència hi ha entre un triangle rectangle i la resta de triangles que ja coneixes?.

 3b. Amb quina fórmula es calcula el àrea d’un triangle?.


4. Dibuixa un triangle isósceles a la llibreta i calcula la seva àrea en centímetres quadrats.


5. Quina és a fórmula per a calcular l’àrea d’un quadrat?. A més de contestar a la pregunta, dibuixa un quadrat a la teva llibreta i calcula la seva àrea en centímetros quadrats i també el seu perímetre.


6. Agafa un foli i intenta construir la figura blava de sota del tot de la página 34 del llibre, primer dibuixa-la amb el regle i després retalla-la i monta-la.


7. Per últim dibuixa i sombreja la figura de la estrella de sota de la página 39. Si no saps bé fer-ho amb l’esquema del llibre, mira aquest video per a veure ben bé com dibuixar aquesta estrella de sis puntes.








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- you can look for the same kind of exercises from the last ones, from the 17 number exercise on.





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 - Motion with constant acceleration formula :


























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 - Here you have extra exercicies about MRU in case you wanna practice even more :















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    - Motion equations :








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 - Uniform Motion with Constant Velocity  in a straight line ( MRU or UMCV ) :

  

                          Fórmula de la velocidad en un movimiento rectilíneo uniforme (MRU)



Fórmula de la posición en un movimiento rectilíneo uniforme (MRU)




 











 - Today we’re gonna pay attention to motion graphs ( lessons 3a and 3b and lesson 4 of this webpage ) :








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- Watch these videos about the difference between speed and velocity :









- Read the following page about speed and velocity difference :







 - Finally you have here a video with an example about calculating speed and average velocity :






 - Here you can practice with serveral exercices :






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Frame of reference: When you are standing on the ground, that is your frame of reference. Anything that you see, watch, or measure will be compared to the reference point of the ground. If I am standing in the back of a moving truck, the truck is now my frame of reference and everything will be measured compared to it.






- Read carefully this webpage and study how important frame reference system is :





- If you are really more interested about frame reference significance, it would be great that you watch the following video carefully at home and learn about Einstein relativity theory that are straightaway related to reference system issue :


                     * Einstein relativity theory and reference systems.




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A trajectory or flight path is the path that a moving object follows through space as a function of time.[1] The object might be a projectile or a satellite. For example, it can be an orbit—the path of a planet, an asteroid, or a comet as it travels around a central mass. A trajectory can be described mathematically either by the geometry of the path or as the position of the object over time.

















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Motion (physics)

From Wikipedia :
       

In physics, motion is a change in position of an object over time. Motion is typically described in terms of displacement, distance, velocity, acceleration, time and speed. Motion of a body is observed by attaching a frame of reference to an observer and measuring the change in position of the body relative to that frame.

If the position of a body is not changing with respect to a given frame of reference, the body is said to be at rest, motionless, immobile, stationary, or to have constant (time-invariant) position. An object’s motion cannot change unless it is acted upon by a force, as described.

Trajectory

From Wikipedia :

A trajectory or flight path is the path that a moving object follows through space as a function of time.[1] The object might be a projectile or a satellite. For example, it can be an orbit—the path of a planet, an asteroid, or a comet as it travels around a central mass. A trajectory can be described mathematically either by the geometry of the path or as the position of the object over time.




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 - Watch this video and compare scalar magnitude with vector mesurement :







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- Watch these two videos in order to check properly what distance and displacement are.
   Later prepare with your classmate a presentation (it can be a powerpoint or a video) in which your team explain the differences between both concepts using an example as done in the following videos :

 





 BEFORE FINISHING YOUR POWERPOINT OR VIDEO DON’T FORGET TO MENTION IN YOUR WORK WHY ONE IS A VECTORIAL MAGNITUD AND THE OTHER A SCALAR ONE !!!



  - I post here a video where I am explaining to you, more or less, what you have to tell at your work or PowerPoint on Friday :