Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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Motion is a change in ____.
a. | time | b. | speed | c. | velocity | d. | position |
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2.
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A place or object used for comparison to determine if something is in motion is
called
a. | a position. | b. | a reference point. | c. | a constant. | d. | velocity. |
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3.
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A person walks 1 mile every day for exercise, leaving her front porch at 9:00
am. and returning to her front porch at 9:25 am. What is the total displacement of her daily
walk?
a. | 1 mile | b. | 0 | c. | 25 minutes | d. | none of the
above |
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4.
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A passenger in the rear seat of a car moving at a steady speed is at rest
relative to
a. | the side of the road. | c. | the front seat of the car. | b. | a pedestrian on the
corner ahead. | d. | the wheels of
the car. |
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5.
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You can show the motion of an object on a line graph in which you plot distance
against
a. | velocity. | b. | time. | c. | speed. | d. | direction. |
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6.
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If you ride your bicycle down a straight road for 500 m then turn around and
ride back, your distance is ____ your displacement.
a. | greater than | c. | less than | b. | equal to | d. | can’t
determine |
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7.
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The speed you read on a speedometer is ____.
a. | instantaneous speed | c. | average speed | b. | constant speed | d. | velocity |
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8.
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Speed equals distance divided by
a. | time. | b. | velocity. | c. | size. | d. | motion. |
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9.
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On a graph showing distance versus time, a horizontal line represents an object
that is
a. | moving at a constant speed. | c. | decreasing its
speed. | b. | increasing its speed. | d. | not moving at all. |
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10.
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In graphing motion, the steepness of the slope depends on
a. | how quickly or slowly the object is moving. | b. | how far the object
has moved. | c. | when the object began moving. | d. | the direction the object is
moving. |
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11.
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3 m/s north is an example of a(n) ____.
a. | speed | b. | velocity | c. | position | d. | acceleration |
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12.
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A merry-go-round horse moves at a constant speed but at a changing ____.
a. | velocity | b. | balanced force | c. | inertia | d. | unbalanced
force |
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13.
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Acceleration is rate of change of ____ over a unit of time.
a. | position | b. | time | c. | speed | d. | force |
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14.
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Changing direction is an example of a kind of
a. | acceleration. | b. | speed. | c. | velocity. | d. | constant
rate. |
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15.
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A feather will fall through the air more slowly than a brick because of
____.
a. | air resistance | b. | gravity | c. | inertia | d. | momentum |
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16.
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If you know a car traveled 100 miles in 2 hours, you can find its
a. | acceleration. | b. | direction. | c. | average speed. | d. | velocity. |
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17.
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A train that travels 100 kilometers in 4 hours is traveling at what average
speed?
a. | 50 km/h | b. | 100 km/h | c. | 2 km/h | d. | 25
km/h |
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18.
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The moon accelerates because it is
a. | in a vacuum in space. | b. | continuously changing
direction. | c. | a very large sphere. | d. | constantly increasing its speed of
orbit. |
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19.
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An object that is accelerating may be
a. | slowing down. | c. | changing direction. | b. | gaining speed. | d. | all of the
above |
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20.
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If the speed of an object does NOT change, the object is traveling at
a(n)
a. | constant speed. | c. | increasing speed. | b. | average speed. | d. | decreasing
speed. |
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21.
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A horizontal line on a speed vs.time graph shows ____ acceleration.
a. | positive | b. | negative | c. | changing | d. | zero |
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22.
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If velocity is measured in kilometers per hour and time is measured in hours,
the unit of acceleration is
a. | hours. | c. | kilometers per hour per hour. | b. | kilometers per
hour. | d. | kilometers. |
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23.
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Suppose you increase your walking speed from 1 m/s to 3 m/s in a period of 1 s.
What is your acceleration?
a. | 2 m/s2 | b. | 5 m/s2 | c. | 4 m/s2 | d. | 3
m/s2 |
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24.
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Which of these is an example of deceleration?
a. | a bird taking off for flight | b. | a baseball released by a
pitcher | c. | a car approaching a red light | d. | an airplane following a straight flight
path |
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25.
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A distance-time graph indicates that an object moves 50 m in 4 s and then
remains at rest for 1 s. What is the average speed of the object?
a. | 10 m/s | b. | 25 m/s | c. | 50 m/s | d. | 13
m/s |
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26.
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In physical science, a push or a pull is called a(n)
a. | force. | b. | acceleration. | c. | inertia. | d. | motion. |
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27.
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The SI unit of force is the
a. | joule. | b. | kilogram. | c. | meter. | d. | newton. |
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28.
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When an unbalanced force acts on an object,
a. | the object’s motion does not change. | c. | the weight of the object
decreases. | b. | the object accelerates. | d. | the inertia of the object increases. |
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29.
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What happens when two forces act in the same direction?
a. | They cancel each other out. | b. | The stronger one prevails. | c. | They add
together. | d. | Their sum divided by two is the total force. |
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30.
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The force that one surface exerts on another when the two rub against each other
is called
a. | friction. | b. | acceleration. | c. | inertia. | d. | gravity. |
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31.
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As you push a cereal box across a tabletop, the sliding friction acting on the
cereal box
a. | acts in the direction of motion. | b. | equals the weight of the
box. | c. | is usually greater than static friction. | d. | acts in the
direction opposite of motion. |
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32.
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When two equal forces act on the same object in opposite directions, the net
force is
a. | smaller than either force. | b. | equal to each of the
forces. | c. | zero. | d. | greater than either
force. |
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33.
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What kind of friction occurs as a fish swims through water?
a. | fluid | b. | rolling | c. | sliding | d. | static |
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34.
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Which of the following is an example of increasing friction
intentionally?
a. | waxing skis | c. | throwing sand on an icy driveway | b. | adding grease to
gears on a bike | d. | oiling a
squeaky door |
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35.
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Which of the following is an example of rolling friction?
a. | your shoes on a sidewalk as you walk | c. | a boat on the water as it
sails | b. | bike tires on the road as you ride | d. | two hands rubbing
together |
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