Worksheets2022-23 PRETEST - 11.1, 11.2, 11.2 (Graphing Motion), 11.3
Total questions: 68
Worksheet time: 34mins
What two things must you know to describe the motion of an object?
Direction the object is moving
The mass of the object
How fast the object is moving
The aerodynamics of the object
What best describes the term "Frame of reference"?
The length of a path between two objects.
The measure of the change in an object's velocity.
A system of objects that are not moving relative to one another.
The distance between the object and the person viewing the object.
The "Frame of reference" is not necessary to describe motion accurately and completely.
True
False
Movement as related to a "Frame of reference" is called __________________________?
Displacement
Relative motion
Differential motion
Acceleration
Imagine you are riding in a car. What is the best "Frame of reference" you could use to determine how fast the car is moving relative to the ground.
The people sitting next to you in the backseat.
The driver of the car.
A van traveling in the lane next to your car.
A sign post on the side of the road.
The length of a path between two points is known as __________________________.
Vector path
Displacement
Distance
Directional length
What is the SI unit best suited for measuring the length?
Kilometers
Centimeters
Millimeters
Meters
Five blocks South is an example of a displacement.
True
False
Compare and contrast "Distance" and "Displacement".
Distance refers to the direction of a straight line, whereas Displacement describes the location of a object relative to its Distance
Distance is the direction of a straight line from a starting point to and end point, whereas Displacement refers to the length of a path between two points.
Distance is the length of a path between two points, whereas Displacement is the direction of a straight line from a starting point to and end point.
Distance involves measurement of how fast an object travels, whereas Displacement involves the direction of the motion of an object.
What would your total Displacement be if you walked from your front door, around the block, and the stopped when you reached your front door again?
One block
Two blocks
The entire length of your walk
Zero
A vector is a quantity that has both ____________________________ and ___________________________.
Time and Direction
Magnitude and Motion
Magnitude and Direction
Magnitude and Velocity
What three things are used to describe the Magnitude of a vector?
Length
Direction
Size
Amount
To combine two Displacements that are in opposite directions, the Magnitudes would be ____________________.
Subtracted
Added
Multiplied
Canceled
The Vector sum of two or more other vectors is called the ______________________________.
Measured Vector
Final Vector
Combined Vector
Resultant Vector
Based on attached diagram, the Magnitudes of the two Displacement Vectors are ________ and ________.
10 km and 4 km
4 km and 3 km
7 km and 2 km
Not determinable
Based on the attached diagram, because the two Displacements are in the opposite directions, the magnitude of the total Displacement is ___________________.
21 km
5 km
10 km
Not determinable
What is the total Displacement of a cyclist who travels 1 mile North, then 1 mile East, and finally 1 mile South?
3 miles East
3 miles South
1 mile North
1 mile East
"A system of objects that are not moving relative to one another" best defines
Displacement
Motion
a Vector
Frame of Reference
Speed is best defined as
Ratio of velocity at which an object moves to the amount of time moved
Ratio of distance moved to amount of time it moves
Ratio of displacement of the distance moved to the amount of time it moved
None of the above
The SI units for speed are
Kilometers km per hour km/hr
Kilometers km per second km/s
Centimeters cm per second cm/s
Meters per second (m/s)
What best describes how Instantaneous Speed is different than Average Speed?
Instantaneous Speed is measured at a specific instant, while Average Speed is computed for the entire duration of a trip
Instantaneous Speed is measured over the entire duration of a trip, while Average Speed is computed for the entire duration of a trip
Instantaneous Speed measures velocity at a specific time and Average Speed measure velocity over an entire duration
None of the above
The equation used for calculating Average Speed is
a2 + b2 = c2
c = a2 + b2
v = yd
a = t(Vf −Vi)
You can determine how fast you were going at the midpoint of a trip by calculating average speed for the entire trip
True
False
A student walked 1.5 km in 25 minutes on the way to school, and then, realizing she was late, ran the remaining 0.5 km in 5 minutes. Calculate the average speed of the student on the way to school
5.0 km/hour
4.0 km/hour
3.0 km/hour
2.0 km/hour
Convert 5 km/hour to meters/second (m/s)
1.39 m/s
2.25 m/s
1.93 m/s
None of the above
What type of speed does an automobile's speedometer display?
Acceleration
Average Speed
Instantaneous Speed
Meters per Second
Does a car's speedometer measure Speed or Velocity?
Velocity
Speed
Both
Neither
The Slope of a line on a distance-time graph represents
Distance
Velocity
Acceleration
Speed
How do Speed and Velocity differ?
Speed describes both speed and direction of motion; Velocity indicates distance traveled over a given amount of time
Speed indicates distance traveled over a given amount of time; Velocity describes both speed and direction of motion
Speed is the numerator and Velocity is the denominator for determining Average Speed
Speed is more related to Distance whereas Velocity is related to Acceleration
A change in Velocity is best described as
A. A moving object gains speed
B. A moving object moves is a straight line at a constant speed
C. A moving object changes direction
D. Both A and C, but not B
If a car travels around a gentle curve on a highway at 60 km/hr, the velocity does not change.
True
False
How do velocities combine?
Vector Addition
Vector Average
Average Distance
Unit of measure divided by Average Speed
A river flows at a Velocity of 3 km / hour relative to the riverbank. A boat moves upstream at a Velocity of 15 km / hour relative to the river. What is the Velocity of the boat relative to the riverbank?
18 km / hour downstream
15 km / hour upstream
12 km / hour upstream
12 km / hour downstream
None of the above
Speed (select the two correct answers)
The ratio of the distance an object travels to the amount of time an object moves
The ratio of total distance covered to the total amount of time
The rate at which an object is moving at a given moment in time
A description of both speed and direction of motion
A line on a Distance-Time Graph
Instantaneous Speed
The ratio of the distance an object travels to the amount of time an object moves
The ratio of total distance covered to the total amount of time
The rate at which an object is moving at a given moment in time
A description of both speed and direction of motion
A line on a Distance-Time Graph
Average Speed
The ratio of the distance an object travels to the amount of time an object moves
The ratio of total distance covered to the total amount of time
The rate at which an object is moving at a given moment in time
A description of both speed and direction of motion
A line on a Distance-Time Graph
Velocity
The ratio of the distance an object travels to the amount of time an object moves
The ratio of total distance covered to the total amount of time
The rate at which an object is moving at a given moment in time
A description of both speed and direction of motion
A line on a Distance-Time Graph
Slope
The ratio of the distance an object travels to the amount of time an object moves
The ratio of total distance covered to the total amount of time
The rate at which an object is moving at a given moment in time
A description of both speed and direction of motion
A line on a Distance-Time Graph
A vector is
Speed
Acceleration
Distance
Velocity
What shows the Speed on a Distance-Time graph?
Distance of a line
Slope of a line
Y axis
X axis
Velocity changes ________________________ throughout the physical world.
frequently
infrequently
The rate at which velocity changes is known as _________________________________.
inertia
speed
acceleration
vector addition
Velocity is a combination of what two things?
speed
distance
momentum
direction
True or False: Acceleration is a vector.
True
False
True or False: Scientifically, acceleration describes situations in which the speed of an object increasing.
True
False
True or False: Scientifically, acceleration applies to any change in an object's velocity.
True
False
What is the acceleration of a bus moving down a city street at a constant rate of speed?
positive
negative
zero
None of the above
Negative acceleration is also known as __________________________________.
reduced accleration
excceleration
deceleration
stoppage
True or False: Deceleration is an acceleration that slows an object's speed.
True
False
The movement of an object toward Earth solely because of gravity is known scientifically as _________________________.
decendence
deceleration
free fall
positive acceleration
Free Fall is an example of acceleration due to a change in _______________________________.
vectors
weight
direction
speed
Objects falling near Earth's surface accelerate downward at a rate of _______________.
3.14 m/s squared
120 m/s
9.8 m/s squared
Acceleration doesn't apply in this situation.
True or False: Acceleration always involves changes in speed.
True
False
True or False: From a physical science standpoint, acceleration can occur even if you are moving at a constant speed.
True
False
True or False: A car is considered to be accelerating if it is changing direction and its speed is decreasing.
True
False
A steady change in velocity is known as
positive acceleration
positive velocity
average acceleration
constant acceleration
Acceleration for straight-line motion is calculated by
dividing the Change in Velocity by Total Time
dividing the Total Time by the Change in Velocity
computing the average Change in Velocity of the object in motion
multiplying Total Time by the Change in Velocity
When calculating acceleration, if velocity increases, acceleration is
positive
negative
True or False: Scientifically speaking, a car moving at a constant speed as it rounds a curve is not accelerating.
True
False
The slope of a speed-time graph is
speed
velocity
time
acceleration
What does a horizontal line represent on a speed-time graph?
velocity
deceleration
constant speed
acceleration
Accelerated motion is represented by what on a distance-time graph?
dotted line
horizontal line
vertical line
curved line
_____________________________ acceleration is how fast a velocity is changing at a specific instant.
Immediate
Positive
Constant
Instantaneous
Acceleration is equal to _______________________________.
distance divided by time.
change in speed divided by time.
the slope of a distance-time graph.
change in speed multiplied by time.
Using the attached diagram, select the best answer below to fill in the box labeled A. ?
Velocity
Distance
Direction
Both changes in speed and direction
Free fall
Using the attached diagram, select the best answer below to fill in the box labeled B. ?
Velocity
Distance
Direction of movement
Both changes in speed and direction
Free fall
Using the attached diagram, select the best answer below to fill in the box labeled C. ?
Velocity
Distance
Direction of movement
Both changes in speed and direction
Free fall
Using the attached diagram, select the best answer below to fill in the box labeled D. ?
Velocity
Distance
Direction of movement
Both changes in speed and direction
Free fall
