Velocity

by Osama M. Khaled last modified 2022-06-25T01:14:59+01:00

Velocity tells us more about things that we need to know about motion

Questions #: 11
Time: 5 minutes
Pass Score: 80.0%

    Velocity is how fast something is moving in a specific ________

    latitude
    depth
    liquid
    direction

    Identify the following two descriptions below as speed or velocity

    1. 20 meters/second 
    2. 20 meters/second northeast
    Please drag and drop the selected option in the right place or type it instead
    velocity
    speed

    The defining equation for velocity is

    1. v = d / t
    2. v = d * t
    3. v = t / d
    4. v = (t * d)2
    a
    b
    c
    d

    A quantity that has direction as well as magnitude (size) is called

    a distance
    a goal
    a target
    a vector

    Why quantities in velocity equation are in bold face although it is defined same way as speed equation

    v = d / t

    They are important
    Just a style
    They are vectors
    None of the above

    Symbol d in velocity equation

    is called object's displacement and defined as the _______-line distance from object's starting position to its final position, including the direction from start to finish

    v = dt

    straight
    curved
    circular
    double

    Mark the vector quantities

    v = d / t

    v is (1) __________

    d is (2) __________

    t is (3) ___________

    Please drag and drop the selected option in the right place or type it instead
    Vector
    Not Vector
    Not Applicable

    All quantities that are not vector are called _______

    measurements
    scalars
    numeric
    counters

    Identify each of the following quantities as vectors or scalar

    1. velocity
    2. speed
    3. time
    4. displacement
    Please drag and drop the selected option in the right place or type it instead
    vector
    scalar

    Is acceleration a vector or a scalar?

    vector
    scalar

    Jogger Example

    Suppose a jogger leaves her house and jogs north 300 meters to the streetlamp on the corner.  She turns west, jogs another 300 meters, and gets the oak tree 2 minutes after leaving home

    jogger-velocity-example.jpg

    1. Which of the three distances given in the figure is the displacement d?
    2. What is the jogger's average velocity?
    3. What is the total distance (not displacement) travelled?
    4. What is the average speed (not velocity) during the 2 minutes?

     

    Please drag and drop the selected option in the right place or type it instead
    350 meters/min
    500 meters
    700 meters
    250 meters/min in a direction between north and west