Formulario 1 - Fisica

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    Física

    TEMA 1

     M R U

    Obser vaci ón :

    – Observar bien las unidades y aplicar el factor de conversación. Km 5 mh 18 s

    ;

    si es necesario

    – Tener en cuenta que la fórmula del tiempo de encuentro

    ytiempo de alcance son sólo para M..R.U.

    – Para el tiempo de encuentro y de alcance tener en cuenta que los movimientos

    son simultáneos.

     M R U V 

    • f i V V at= ± •i f  V Vd t2

    +  =   

     

    •2

    i1

    d Vt at2

    = ± • 2 2f i V V 2ad= ±

    Obser vaci ón :

    – Observar bien si el movimiento es acelerado o desacelerado para colocar el signo (+); (–),

    respectivamente en las fórmulas.

    – No importa si el movimiento es horizontal, vertical, oblicuo; si es trayectoria recta y 

    aceleración constante entonces será un M.R.U.V.

    – Tener en cuenta las unidades; generalmente las unidades son en el sistema internacional

    (S.I.)

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    TEMA 3

    Estatica

    Fg mg

    Donde:

    m : masa del cuerpo

    g : aceleración de la gravedad.

    Primera Condición de equilibrio

     FR =O

    Física

    TEMA 4

    Dinámica lineal

    TEMA 2

    Caída libre – Movimiento en dos dimensiones

    La caída libre vertical para alturas pequeñas (h < 6400km) viene a ser un MRUV y cumple las

    mismas leyes.

    Fórmu la ad i c i ona l : 

    n i1

    h V g(2n 1)2

    n: Distancia recorrida en el n–esimo segundo.

    PROPIEDADES

    Movimiento completo (Subida y bajada)

    • En el punto "c" (altura máxima) la velocidad es cero.

    C(V 0)

    • Es un mismo nivel la rapidez de subida es igual que la rapidez de bajada

    B D(V V )  ;  A E(V V )

    • Entre dos niveles el tiempo de subida es igual que el tiempo de bajada.

     AB DEt t ; BC CDt t  ;  AC CEt t

    Nota: Se deduce del punto "3".V=0

    HMÁX

    isub baj

    2i

    MAX

     Vt t

    g

     VH

    2g

    Fe k.x

    k: Constante de Elasticidad

    x: Deformación del resorte.

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    Física

    T                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       E                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       

    M                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       A                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      

                           5                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      

    R                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 o                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                z                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   a                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                m                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                i                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              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D                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      i                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            á                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            m                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                i                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 

                               c                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            a                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                

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                                                                                                                                                                                                                                         a                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                r                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         

    1)

    Se

    gundaLeydeNewton.

    2)

    3)

    La

    accióndeuncuerposobreotro,noe

    sunilateral.

    4)

    5)