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    Acceleration Grpah

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    RAFAEL TORRES
    1. A speed-time graph can show whether acceleration is positive or negative based on the slope of the line. A line sloping upward to the right indicates positive acceleration, while a line sloping downward to the right indicates negative acceleration. 2. The document discusses free fall acceleration due to gravity on Earth, which has a constant value of 9.81 m/s2. It provides the kinematic equations relating displacement, initial velocity, acceleration, and time for objects in free fall. 3. Several examples are given of calculating values like velocity, displacement, time and acceleration for objects in free fall scenarios using the kinematic equations. Graphs of distance vs time, velocity vs time and acceleration vs time are

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    Acceleration Grpah

    Uploaded by

    RAFAEL TORRES
    49 views14 pages
    1. A speed-time graph can show whether acceleration is positive or negative based on the slope of the line. A line sloping upward to the right indicates positive acceleration, while a line sloping downward to the right indicates negative acceleration. 2. The document discusses free fall acceleration due to gravity on Earth, which has a constant value of 9.81 m/s2. It provides the kinematic equations relating displacement, initial velocity, acceleration, and time for objects in free fall. 3. Several examples are given of calculating values like velocity, displacement, time and acceleration for objects in free fall scenarios using the kinematic equations. Graphs of distance vs time, velocity vs time and acceleration vs time are

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    GRÁFICAS DE ACELERACIÓN

    Original Title

    acceleration grpah

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    1. A speed-time graph can show whether acceleration is positive or negative based on the slope of the line. A line sloping upward to the right indicates positive acceleration, while a line sloping downward to the right indicates negative acceleration. 2. The document discusses free fall acceleration due to gravity on Earth, which has a constant value of 9.81 m/s2. It provides the kinematic equations relating displacement, initial velocity, acceleration, and time for objects in free fall. 3. Several examples are given of calculating values like velocity, displacement, time and acceleration for objects in free fall scenarios using the kinematic equations. Graphs of distance vs time, velocity vs time and acceleration vs time are

    Copyright:

    © All Rights Reserved
    Download as PPTX, PDF, TXT or read online from Scribd
    Download as pptx, pdf, or txt
    49 views14 pages

    Acceleration Grpah

    Uploaded by

    RAFAEL TORRES
    1. A speed-time graph can show whether acceleration is positive or negative based on the slope of the line. A line sloping upward to the right indicates positive acceleration, while a line sloping downward to the right indicates negative acceleration. 2. The document discusses free fall acceleration due to gravity on Earth, which has a constant value of 9.81 m/s2. It provides the kinematic equations relating displacement, initial velocity, acceleration, and time for objects in free fall. 3. Several examples are given of calculating values like velocity, displacement, time and acceleration for objects in free fall scenarios using the kinematic equations. Graphs of distance vs time, velocity vs time and acceleration vs time are

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    =Acceleration Graph=

    A speed-time graph tell you if acceleration is


    positive or negative number.

    If acceleration is a If acceleration is a
    positive number, the negative number, the
    line slopes upward to line slopes downward
    the right. to the right.
    Velocity

    Velocity

    Time Time
    Draw a speed-time graph with a
    acceleration zero.
    velocity

    Time
    Draw a graph with the data of
    the table, and answer the
    questions.

    Velocity
    Velocity Time (m/s)
    [m/s] [seconds]
    0 2
    15 4
    10 6
    40 8
    40 10
    20 12
    20 14 Time (s)
    0 16 a) How many times the acceleration is positive? __________
    b) How many times the acceleration is negative? __________
    c) How many times the acceleration is equal to zero? __________
    Acceleration
    (Graphic interpretation)
    Distancia Tiempo Velocidad Aceleración
    A motorcyclist makes the
    following displacement. 0 0
    1 1
    1.- Calculate the velocity of
    4 2
    each time.
    9 3
    2.- Calculate the 16 4
    acceleration of each time.
    25 5
    3.- Make the next graphs. 36 6
    49 7
    a) Distance vs. time
    64 8
    b) Velocity ​vs. time
    c) Acceleration vs. time
    Free-Fall
    In the free fall the acceleration is constant.
    g is referred to as the acceleration of gravity. Its
    value is 9.81 m/s2 on Earth.

    Equation
    1 2
    h  v0t  gt
    2
    Free-Fall Example

    A lead sphere is dropped from the second floor of building.


    It takes 1.31 seconds to reach the ground.
    How high is the building if have 48 floors?
    EXTRA EXERSICES

      a vf vo t d

    A   40 30 10  

    B 6   0 5  

     C 0 70   350

     D 1.5 60 15 30  
    Free Fall exercises
    1.- A stone is dropped from a balloon that is descending at a
    uniform rate of 15 m/s when it is 1200 m from ground.

    a) Calculate the velocity and position of the stone after 10 s

    2.- The best human jumpers in the world have a vertical leap of
    about 1.2 m
    b) How fast would they have to leave the ground to get that
    high at the top of their jump?
    c) How long will they be in the air (up and down)? (Hint: where
    do they land compared to where they took off?)
    Assessment
    • How are velocity, time and acceleration related
    mathematically?

    • A swimmer speeds from 1.1 m/s to 1.3 m/s during the


    last 20 seconds of a workout. What is the swimmer´s
    acceleration during this time interval?

    • While walking to school, you approach an intersection


    and slow down from 2m/s to a stop in 3 seconds.
    What was your acceleration during this time interval?
    M.U.A.
    (Movimiento Uniformemente Acelerado)
    Características
    Efectúa cambios de velocidad en intervalos
    iguales de tiempo.
    La velocidad NO es constante.
    Posee una aceleración constante.
    Fórmulas Básicas del MUA
    v f  vo 1 2
    a d  v0  at
    t 2
    Caída libre II
    Cuando se lanza un objeto hacia arriba la aceleración (g) se
    considera negativa, hasta el momento en que comienza a
    caer. Para poder realizar cálculos en estas condiciones se
    requiere adecuar la fórmula, la cual quedaría de las
    siguiente manera.

    1 2
    h  v0t  gt
    2
    Ejemplo
    ¿Que distancia recorre una pelota que es lanzada
    hacia arriba con una velocidad inicial de 30 m/s y
    tarda 6 segundos en comenzar a caer?
    Se lanza verticalmente hacia arriba una pelota con una velocidad
    inicial de 20 m/s, calcula:
    a) Tiempo que tarda en alcanzar su altura máxima.
    b) Altura máxima.
    c) Posición y velocidad de la pelota a los 0.8 s de haberse lanzado
    d) Velocidad y posición de la pelota a los 1.5 s de haber sido
    lanzado.
    e) Tiempo que la pelota estuvo en el aire, si es que se considera
    que ésta partió inicialmente del suelo.
    1 2
    h  vo t  at
    Pelota 2
    Vo=20 m/s
    v f  vo
    Suelo a
    t
    Datos Formula (s) Despeje Sustitución Resultado
    thmax=
    hmax=
    Vf0.8seg=

    h0.8seg=
    Vf1.5seg=

    H1.5seg=
    ttotal=

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