Multiple Choice
Identify the
choice that best completes the statement or answers the question.
|
|
|
1.
|
Which is not an example of sliding friction?
a. | ice skating on a frozen pond | c. | rolling a ball across a
desk | b. | taking notes with a pencil | d. | pushing a book across a table |
|
|
|
2.
|
In order to increase a car’s speed, the force pushing it forward must
be
a. | a negative force. | c. | fundamental friction. | b. | rolling
friction. | d. | kinetic
friction. |
|
|
|
3.
|
The friction between objects that are stationary is called
a. | static friction. | c. | fundamental friction. | b. | rolling
friction. | d. | kinetic
friction. |
|
|
|
4.
|
Which is an example of helpful friction?
a. | wearing batting gloves | c. | applying the brakes on a car | b. | sprinkling sand on
an icy road | d. | All of the
above |
|
|
|
5.
|
Which of the following requires friction?
a. | cleaning a pan | c. | skiing | b. | writing a letter | d. | All of the
above |
|
|
|
6.
|
Using lubricants on engine parts is an example of reducing
a. | force. | c. | acceleration. | b. | friction. | d. | motion. |
|
|
|
7.
|
The distance traveled by an object divided by the time it takes to travel that
distance is called
a. | average velocity. | c. | average acceleration. | b. | average
speed. | d. | negative
acceleration. |
|
|
|
8.
|
On a distance vs. time graph, the line of an object at rest is a
a. | curved line with a slope of zero. | c. | jagged line with a negative
slope. | b. | flat line with a slope of zero. | d. | curved line with a positive
slope. |
|
|
|
9.
|
The difference between speed and velocity is that velocity includes
a. | direction. | c. | time. | b. | distance. | d. | weight. |
|
|
|
10.
|
An example of helpful friction is
a. | car tires wearing out. | c. | writing on paper with a pen. | b. | getting holes in
your socks. | d. | scraping your
knee on the floor. |
|
|
|
11.
|
Friction is defined as the
a. | force that opposes motion between two surfaces that are touching. | b. | rate at which
velocity changes. | c. | resistance of an object to a change in its
velocity. | d. | speed of an object in a particular direction. |
|
|
|
12.
|
An object is in motion when
a. | the net force acting on the object is zero. | b. | friction
occurs. | c. | the object’s displacement is greater than the distance
traveled. | d. | the object changes position relative to a frame of
reference. |
|
|
|
13.
|
Force is a quantity made up of
a. | weight and speed. | c. | time and acceleration. | b. | magnitude and
direction. | d. | mass and
velocity. |
|
|
|
14.
|
Which is an example of balanced forces acting on an object?
a. | a kangaroo jumping | c. | a car turning a corner | b. | a car turning a
corner | d. | a person pushing a
sofa |
|
|
|
15.
|
Acceleration is defined as the change in velocity divided by
a. | speed. | c. | time. | b. | final velocity. | d. | distance. |
|
|
|
16.
|
Which is an example of kinetic friction?
a. | friction between a car’s windshield and the air as you drive into the
wind | b. | friction between your shoes and the ground when you stand still | c. | friction between a
sticky note and the page of a book as it marks your place | d. | friction between
your skin and a pencil as it rests in your palm |
|
|
|
17.
|
In order to determine speed, you must know
a. | only time. | c. | both time and distance. | b. | only
distance. | d. | neither time nor
distance. |
|
|
|
18.
|
An airplane is flying at 635 mi/h at an altitude of 35,000 ft. It is currently
over Kansas and is approximately 16 min ahead of its scheduled arrival time. What is its
velocity?
a. | 635 mi/h | b. | 16 mi/min | c. | 35,000
ft/s | d. | This cannot be determined without further information about its
direction. |
|
|
|
19.
|
Which of the following does not indicate velocity?
a. | 14 ft/s SSE | b. | 40 mi/h toward the town square along the main
street | c. | 80 km/h going from New York toward New Jersey | d. | 28 miles from Los
Angeles to Catalina Island |
|
|
|
20.
|
When an object slows down, its acceleration is
a. | positive. | c. | negative. | b. | centripetal. | d. | constant. |
|
|
|
21.
|
If the net force acting on a stationary object is zero, then the object
will
a. | accelerate in the direction of the strongest force. | b. | remain at
rest. | c. | begin moving backwards. | d. | decelerate at a steady rate of
speed. |
|
|
|
22.
|
Displacement
a. | must be in a particular direction. | b. | is the change in position of an
object. | c. | must be a straight line. | d. | All of the
above |
|
|
|
23.
|
The force of gravity, the electromagnetic force, the strong nuclear force, and
the weak nuclear force are considered
a. | centripetal forces. | c. | resultant forces. | b. | frames of reference. | d. | fundamental
forces. |
|
|
|
24.
|
On a speed vs. time graph, constant acceleration is represented by a
a. | straight line. | c. | jagged line. | b. | slightly sloped line. | d. | steeply sloped
line. |
|
|
|
25.
|
The friction between the bristles of your toothbrush and the surfaces of your
teeth is an example of
a. | rolling friction. | c. | helpful friction. | b. | static friction. | d. | All of the
above |
|
|
|
26.
|
Which straight-line acceleration indicates an increase in speed?
a. | 0 m/s2 | c. | 4 m/s2 | b. | –15 m/s2 | d. | All of the
above |
|
Matching
|
|
|
a. | constant | h. | zero | b. | direction | i. | kinetic or sliding | c. | average
speed | j. | force | d. | independent | k. | meter | e. | slope | l. | meter/sec | f. | displacement | m. | dependent | g. | net
force | n. | kg |
|
|
|
27.
|
What is the SI Unit for mass?
|
|
|
28.
|
Which variable is plotted on the Y axis (horizontal)?
|
|
|
29.
|
What is the SI unit for length?
|
|
|
30.
|
What are the SI units for speed or velocity?
|
|
|
31.
|
Force is a quantity made up of magnitude and ____________________.
|
|
|
32.
|
When an object covers equal distances in equal amounts of time, it is moving at
a(n) ____________________ speed.
|
|
|
33.
|
Because the speed of an object can change from one instant to the next,
dividing the total distance covered by the time of travel gives _________________________.
|
|
|
34.
|
The friction between the bristles of your toothbrush and the surfaces of your
teeth is an example of ____________________ friction.
|
|
|
35.
|
On a distance-time graph, time is usually the ____________________
variable.
|
|
|
36.
|
The change in the position of an object is called ____________________.
|
|
|
37.
|
Acceleration can be determined from a velocity vs. time graph by calculating
the line’s ____________________.
|
|
|
38.
|
The combination of all forces acting on an object is the
_________________________.
|
|
|
39.
|
When the net force on an object is greater than ____________________, the
object will accelerate in the direction of the greater force.
|
|
|
40.
|
An action exerted on a body to change its state of rest or motion is a(n)
____________________.
|
