Multiple Choice
Identify the choice that best completes the
statement or answers the question.
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1.
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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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2.
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Motion is a change in ____.
a. | time | c. | velocity | b. | speed | d. | position |
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3.
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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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4.
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3 m/s north is an example of a(n) ____.
a. | speed | c. | position | b. | velocity | d. | acceleration |
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5.
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The relationship among speed, distance, and time is ____.
a. | t = s/d | c. | s = dt | b. | d = t/s | d. | s = d/t |
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6.
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A single point on a distance-time graph tells the ____.
a. | instantaneous speed | c. | constant speed | b. | average speed | d. | average
velocity |
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7.
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A merry-go-round horse moves at a constant speed but at a changing ____.
a. | velocity | c. | inertia | b. | balanced force | d. | unbalanced
force |
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8.
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Acceleration is rate of change of ____.
a. | position | c. | velocity | b. | time | d. | force |
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9.
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If you ride your bike up a hill, then ride down the other side, your
acceleration is ____.
a. | all positive | c. | first positive, then negative | b. | all
negative | d. | first negative,
then positive |
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10.
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A horizontal line on a velocity/time graph shows ____ acceleration.
a. | positive | c. | changing | b. | negative | d. | zero |
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11.
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What is the speed of an object at rest?
a. | 0.0 m/s | c. | 9.8 m/s | b. | 1.0 m/s | d. | 9.81 m/s |
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12.
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In addition to displacement, which of the following must be used for a more
complete description of the average velocity of an object?
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13.
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A dolphin swims 1.85 km/h. How far has the dolphin traveled after 0.60 h?
a. | 1.1 km | c. | 0.63 km | b. | 2.5 km | d. | 3.7 km |
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14.
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Acceleration is
a. | displacement. | c. | velocity. | b. | the rate of change of
displacement. | d. | the rate of
change of velocity. |
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15.
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When velocity is positive and acceleration is negative, what happens to the
object’s motion?
a. | The object slows down. | c. | Nothing happens to the object. | b. | The object speeds
up. | d. | The object remains at
rest. |
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16.
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Which of the following is a value for the acceleration of objects in free
fall?
a. | 9.81 m/s2 | c. | 9.80 m/s2 | b. | –9.81 m/s2 | d. | –9.80
m/s2 |
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17.
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The SI base unit used to measure mass is the
a. | meter. | c. | kilogram. | b. | second. | d. | liter. |
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18.
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The SI base unit for time is
a. | 1 day. | c. | 1 minute. | b. | 1 hour. | d. | 1 second. |
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19.
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The Greek letter delta, Δ, indicates
a(n)
a. | difference or change. | c. | direct proportion. | b. | sum or total. | d. | inverse
proportion. |
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20.
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What is the symbol for a time interval?
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21.
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What two dimensions, in addition to mass, are commonly used by physicists to
derive additional measurements?
a. | length and width | c. | length and time | b. | area and mass | d. | velocity and
time |
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22.
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What does the graph above illustrate about acceleration?
a. | The acceleration is constant. | b. | The acceleration is zero. | c. | The acceleration
decreases. | d. | There is not enough information to answer. |
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23.
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What does the graph above illustrate about acceleration?
a. | The acceleration varies. | b. | The acceleration is zero. | c. | The acceleration is
constant. | d. | The acceleration increases then becomes constant. |
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24.
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What is the symbol for mass?
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25.
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Which expression has the same dimensions as an expression yielding a value for
acceleration (m/s2)? (Δv has units of m/s.)
a. | Δv ⁄ Δt2 | c. | Δv2 ⁄ Δt | b. | Δv
⁄ Δx2 | d. | Δv2 ⁄ Δx |
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26.
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Which expression has the same dimensions as an expression yielding a value for
time? (v has units of m/s.)
a. | Δx ⁄
v | c. | Δt ⁄ Δx | b. | Δx
⁄ v2 | d. | 1 ⁄
v2•Δt |
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27.
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If the change in position Δx is related
to velocity v (with units of m/s) in the equation Δx =
Av, the constant A has which dimension?
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