Multiple Choice Identify the
choice that best completes the statement or answers the question.
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1.
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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 | c. | 25 minutes | b. | 0 | d. | none of the
above |
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2.
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The slope of a line on a distance-time graph is
a. | distance. | c. | speed. | b. | time. | d. | displacement. |
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3.
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What is the speed of a bobsled whose distance-time graph indicates that it
traveled 100 m in 25 s?
a. | 4 m/s | c. | 0.25 mph | b. | 2500 m/s | d. | 100 m/s |
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4.
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The rate at which velocity changes is called
a. | speed. | c. | acceleration. | b. | vectors. | d. | motion. |
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5.
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The slope of a speed-time graph indicates
a. | direction. | c. | velocity. | b. | acceleration. | d. | speed. |
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6.
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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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7.
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The SI unit of force is the
a. | joule. | c. | meter. | b. | kilogram. | d. | newton. |
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8.
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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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9.
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The property of matter that resists changes in motion is called
a. | friction. | c. | inertia. | b. | gravity. | d. | weight. |
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10.
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According to Newton’s second law of motion, the acceleration of an object
equals the net force acting on the object divided by the object’s
a. | mass. | c. | velocity. | b. | momentum. | d. | weight. |
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11.
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Your weight equals your
a. | mass. | b. | mass divided by the net force acting on
you. | c. | mass times the acceleration due to gravity. | d. | mass times your
speed. |
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12.
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Newton’s third law of motion describes
a. | action and reaction forces. | c. | centripetal
forces. | b. | balanced forces. | d. | net force. |
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13.
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The product of an object’s mass and velocity is its
a. | centripetal force. | c. | net force. | b. | momentum. | d. | weight. |
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14.
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What is conserved when two objects collide in a closed system?
a. | acceleration | c. | speed | b. | momentum | d. | velocity |
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15.
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The force that keeps an object moving in a circle is called
a. | centripetal force. | c. | inertia. | b. | fluid friction. | d. | momentum. |
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16.
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In order to calculate pressure exerted on a surface, what quantity is divided by
the surface area?
a. | altitude | c. | mass | b. | force | d. | volume |
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17.
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What is the SI unit of pressure?
a. | g/cm3 | c. | the newton | b. | m/s2 | d. | the pascal |
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18.
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The operation of a hydraulic lift system is explained by
a. | Archimedes’ principle. | b. | Bernoulli’s
principle. | c. | Newton’s principle. | d. | Pascal’s
principle. |
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19.
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The relationship between buoyant force and weight of a displaced fluid was first
stated by
a. | Archimedes. | c. | Newton. | b. | Bernoulli. | d. | Pascal. |
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20.
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Which of the following substances will float in corn syrup? (The density of corn
syrup is 1.38 g/cm3.)
a. | copper (8.9 g/cm3) | c. | iron (7.8
g/cm3) | b. | silver (10.5
g/cm3) | d. | glycerin
(1.26 g/cm3) |
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21.
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Which of the following substances will sink in glycerin? (The density of
glycerin 1.26 g/cm3.)
a. | water (1.00 g/cm3) | c. | benzene (0.90
g/cm3) | b. | ethyl alcohol (0.81
g/cm3) | d. | aluminum
(2.70 g/cm3) |
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22.
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Why does a hot-air balloon float?
a. | The shape of the balloon provides lift. | b. | The volume of the
air displaced by the balloon is less than the volume of the balloon. | c. | The weight of the
air displaced is less than the volume of the balloon. | d. | The weight of the balloon is less than the
weight of the air displaced by the balloon. |
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23.
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Work is a transfer of
a. | energy. | c. | mass. | b. | force. | d. | motion. |
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24.
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The energy of motion is called
a. | kinetic energy. | c. | thermal energy. | b. | potential energy. | d. | work. |
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25.
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Which of the following is an example of an object with elastic potential
energy?
a. | a wind-up toy that has been wound up | b. | a compressed basketball | c. | a stretched rubber
band | d. | all of the above |
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26.
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Which of the following increases when an object becomes warmer?
a. | chemical energy | b. | elastic potential energy | c. | nuclear
energy | d. | thermal energy |
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27.
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The energy stored in gasoline is
a. | chemical energy. | c. | mechanical energy. | b. | electromagnetic energy. | d. | nuclear energy. |
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28.
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Nuclear power plants are designed to convert nuclear energy into what type of
energy?
a. | chemical | c. | geothermal | b. | electrical | d. | mechanical |
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29.
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Which of the following statements is true according to the law of conservation
of energy?
a. | Energy cannot be created. | b. | Energy cannot be destroyed. | c. | Energy can be
converted from one form to another. | d. | all of the
above |
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30.
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The equation E = mc2 relates energy and
a. | force. | c. | mass. | b. | gravity. | d. | work. |
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