Multiple
Choice
Identify the letter of the choice that best completes the statement or answers the
question.
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1.
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The basic SI unit of length is
the a. | meter. | b. | foot. | c. | inch. | d. | mile. | | |
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2.
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Speed equals distance divided
by a. | time. | b. | velocity. | c. | size. | d. | motion. | | |
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3.
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When you know both the speed
and direction of an object’s motion, you know the a. | average speed of the object. | b. | acceleration of the object. | c. | distance the object has
traveled. | d. | velocity of the object. | | |
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4.
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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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5.
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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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6.
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The rate at which velocity
changes is called a. | speed. | b. | direction. | c. | acceleration. | d. | motion. | | |
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7.
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To determine the acceleration
rate of an object, you must calculate the change in velocity during each unit of a. | speed. | b. | time. | c. | motion. | d. | deceleration. | | |
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8.
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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. | b. | kilometers per
hour. | c. | kilometers per hour per hour. | d. | kilometers. | | |
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9.
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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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10.
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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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11.
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Liters, meters, and grams are
all a. | distances. | b. | reference
points. | c. | units. | d. | velocities. | | |
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12.
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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. | b. | increasing its
speed. | c. | decreasing its speed. | d. | not moving at all. | | |
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13.
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The International System of
Units is used a. | only in the United States. | b. | only in France. | c. | in most of
Europe. | d. | all over the world. | | |
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14.
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If you know the distance an
object has traveled in a certain amount of time, you can determine a. | the size of the object. | b. | the speed of the
object. | c. | the location of the object. | d. | the velocity of the object. | | |
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15.
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It is rare for any motion
to a. | stay the same for very long. | b. | change quickly. | c. | increase in
velocity. | d. | decrease in speed. | | |
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16.
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If the speed of an object does
NOT change, the object is traveling at a a. | constant speed. | b. | average speed. | c. | increasing
speed. | d. | decreasing speed. | | |
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17.
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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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18.
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If a bicyclist travels 100
kilometers in two hours, her average speed is a. | 50 km/h. | b. | 60 km/h. | c. | 15 km/h. | d. | 2 km/h. | | |
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19.
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If an object moves in the same
direction and at a constant speed for 4 hours, which of the following is true? a. | The object’s speed changed during the 4 hours. | b. | The object’s velocity did not change. | c. | The object accelerated during the 4 hours. | d. | The object decelerated during the 4 hours. | | |
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20.
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If you know a car traveled 5500
kilometers in 3 hours, you can find its a. | acceleration. | b. | direction. | c. | average speed. | d. | velocity. | | |
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21.
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In an acceleration graph
showing speed versus time, a straight line shows the acceleration is a. | decreasing. | b. | increasing. | c. | changing. | d. | constant. | | |
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22.
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Which of the following is an
example of exerting a force? a. | a child running through a
field | b. | a train speeding down a track | c. | a carpenter hammering a nail | d. | an airplane soaring through the sky | | |
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23.
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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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24.
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The tendency of an object to
resist change in its motion is known as a. | mass. | b. | inertia. | c. | force. | d. | balance. | | |
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25.
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The greater the mass of an
object, a. | the easier the object starts moving. | b. | the greater its inertia. | c. | the more balanced it
is. | d. | the more space it takes up. | | |
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26.
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Force equals mass
times a. | speed. | b. | motion. | c. | acceleration. | d. | inertia. | | |
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27.
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One way to increase
acceleration is by a. | increasing mass. | b. | decreasing mass. | c. | decreasing
force. | d. | increasing both force and mass
proportionally. | | |
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28.
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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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29.
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Which of the following is an
example of rolling friction? a. | your shoes on a sidewalk as you
walk | b. | bike tires on the road as you ride | c. | a boat on the water as it sails | d. | two hands rubbing together | | |
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30.
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When the only force acting on a
falling object is gravity, the object is said to be a. | stationary. | b. | decelerating. | c. | in free fall. | d. | a projectile. | | |
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31.
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Air resistance is a type
of a. | motion. | b. | acceleration. | c. | velocity. | d. | friction. | | |
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32.
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The force of gravity on a
person or object at the surface of a planet is known as a. | mass. | b. | inertia. | c. | air resistance. | d. | weight. | | |
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33.
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Weight equals mass
times a. | force due to balanced forces. | b. | acceleration due to gravity. | c. | inertia due to force. | d. | air resistance. | | |
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34.
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The law of universal
gravitation states that any two objects in the universe, without exception, a. | attract each other. | b. | repel each
other. | c. | combine to provide a balanced force. | d. | create friction. | | |
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35.
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Two figure skaters who push off
of each other will move at the same speed if a. | they push with the same
force. | b. | the ice does not cause any friction. | c. | there is no air resistance. | d. | they have the same
mass. | | |
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36.
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Forces can be added together
only if they are a. | acting on the same object. | b. | balanced forces. | c. | unaffected by
gravity. | d. | substantial. | | |
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37.
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The product of an
object’s mass and velocity is called its a. | inertia. | b. | momentum. | c. | acceleration. | d. | force. | | |
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38.
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What is required for a rocket
to lift off into space? a. | thrust that is greater than Earth’s
gravity | b. | mass that is greater than Earth’s | c. | very little air resistance | d. | more velocity than
friction | | |
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39.
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An object that travels around
another object in space is called a a. | projectile. | b. | inertia. | c. | mass. | d. | satellite. | | |
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40.
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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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41.
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The amount of matter in an
object is called its a. | inertia. | b. | mass. | c. | force. | d. | balance. | | |
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42.
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Which of the following is an
example of increasing friction intentionally? a. | waxing skis | b. | adding grease to gears on a bike | c. | throwing sand on an icy driveway | d. | oiling a squeaky door | | |
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43.
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The force that pulls falling
objects toward Earth is called a. | gravity. | b. | free fall. | c. | acceleration. | d. | air resistance. | | |
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44.
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Objects falling through air
experience a type of friction called a. | terminal
velocity. | b. | air resistance. | c. | inertia. | d. | rolling
friction. | | |
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45.
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According to Newton’s
third law of motion, when a hammer strikes and exerts force on a nail, the nail a. | creates a friction with the hammer. | b. | disappears into the wood. | c. | exerts an equal force back on the
hammer. | d. | moves at a constant speed. | | |
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