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  • a system for specifying the precise location of objects in space and time

    frame of reference

    if an object is at rest, its position (does or does not) change with respect to a fixed frame of reference

    does not

    the change in position of an object

    displacement

    displacement is a _______ in position

    change

    displacement formula

    displacement (is or is not) always equal to the distance traveled

    is not

    displacement also includes a description of the _________ of motion

    direction

    the total displacement divided by the time interval during which the displacement occurred

    average velocity

    average velocity formula

    the average velocity is equal to the ______ _______ needed to cover the given displacement in a given time interval

    constant velocity

    average speed formula

    velocity describes a _______ with both a direction and a numerical value indicating how fast something moves

    motion

    _______ has no direction, only magnitude

    speed

    the velocity of an object can be determined if the object's position is known at specific ______ along its path

    times

    for any position-time graph, average ______ can be determined

    velocity

    average velocity formula

    instantaneous velocity (may or may not) be the same as average velocity

    may not

    the velocity of an object at some instant or at a specific point in the object's path

    instantaneous velocity

    the instantaneous velocity at a given time can be determined by ....

    measuring the slope of the line that is tangent to that point on the position-versus-time graph

    _______ is the rate of change of velocity with respect to time

    acceleration

    the rate at which velocity changes over time; an object _____(s) if its speed, direction, or both change

    acceleration

    average acceleration formula

    acceleration has dimensions of ...

    length
    --------
    time^2

    the slope and shape of a graph describe the object's _____

    motion

    as an object's velocity increases, the object travels a ______ distance during each time interval

    greater

    displacement depends on ... (3 things)

    acceleration, initial velocity, time

    displacement with constant acceleration formula

    displacement = 1/2(initial velocity + final velocity)(time interval)

    final velocity depends on ...

    initial velocity, acceleration, time, displacement

    velocity with constant acceleration formula

    Vf = Vi + a(t)

    final velocity after any displacement formula

    Vf^2 = Vi^2 + 2(a)(x)

    free falling bodies undergo _______ acceleration

    constant

    all objects dropped near the surface of a planet fall with the same ____ _____

    constant acceleration

    the constant acceleration due to gravitational force (motion is referred to as)

    free fall

    constant acceleration due to gravity (number)

    -9.81 m/s^2 (may be rounded to -10)

    acceleration is _____ during upward and downward motion

    constant

    an object thrown into the air has a _______ acceleration as soon as they are released

    downward

    in a velocity-versus-time graph a straight, diagonal line indicates...

    constant acceleration // increasing velocity

    free falling objects always have the same _______ acceleration

    downward

    when an object is thrown up in the air, it has a ______ velocity and a _____ acceleration

    positive - negative

    at the top of it's path, an object's velocity has decreased until it is ___

    0

    when an object begins moving down (after its velocity has reached 0) it has a _____ velocity and ______ acceleration

    negative - negative

    a negative acceleration and a negative velocity indicate that an object is ______ _____

    speeding up

    in a velocity-versus-time graph a straight, horizontal line indicates...

    constant velocity // no acceleration

    in a distance-versus-time graph a straight, diagonal line indicates...

    constant velocity

    in a distance-versus-time graph a straight, horizontal line indicates...

    no velocity // not moving

    in a distance-versus-time graph a curved (parabola) line indicates...

    increasing velocity

    position = where an object is ______

    located

    distance = how far an object ______

    travels

    displacement = how far from ______ ______ an object is

    original position

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