Multiple Choice
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1.
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Which one of the following is not a scalar quantity?
a. | distance | b. | velocity | c. | density | d. | mass | e. | time |
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2.
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Suppose you start at point A and walk a distance d south. You then walk a
distance 3d east and then a distance 5d north to point B. The magnitude of the
displacement from point A to point B is
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3.
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Which of the following is a physical quantity that has a magnitude but no
direction?
a. | resultant | b. | frame of ref. | c. | vector | d. | scalar |
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4.
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Which of the following is a physical quantity that has both magnitude and
direction?
a. | frame of ref. | b. | vector | c. | scalar | d. | resultant |
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5.
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Which of the following is an example of a vector quantity?
a. | velocity | b. | volume | c. | temperature | d. | mass |
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6.
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Identify the following quantities as scalar or vector: the speed of a snail, the
time it takes to run a mile, the free-fall acceleration.
a. | vector, scalar, scalar | c. | vector, scalar, vector | b. | scalar, vector,
vector | d. | scalar, scalar,
vector |
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7.
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In the figure above, which diagram represents the vector addition C =
A + B?
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8.
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In the figure above, which diagram represents the vector subtraction C =
A–B?
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9.
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Multiplying or dividing vectors by scalars results in
a. | scalars if multiplied or vectors if divided. | b. | vectors if
multiplied or scalars if divided. | c. | scalars. | d. | vectors. |
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10.
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 An athlete completes two laps of a circular track
of radius 50.0 m. The total displacement of the athlete at the end of the run is a. | 100 m | b. | 314 m | c. | 50.0 m | d. | zero | e. | 728
m |
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11.
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How many displacement vectors shown in the figure above have horizontal
components?
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12.
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How many displacement vectors shown in the figure above have components that lie
along the y-axis and are pointed in the –y direction?
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13.
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Which displacement vectors shown in the figure above have vertical components
that are equal?
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14.
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In a coordinate system, the magnitude of the x component of a vector and
θ, the angle between the vector and x-axis, are known.
The magnitude of the vector equals the x component
a. | multiplied by the cosine of θ. | c. | divided by the sine
of θ. | b. | divided by the cosine of θ. | d. | multiplied by the sine of θ. |
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15.
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A vector is a quantity that has
a. | magnitude and direction. | b. | magnitude and time. | c. | time and
direction. |
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16.
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A scalar is a quantity that has
a. | color. | b. | time. | c. | magnitude. | d. | direction. |
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17.
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When representing velocity as a vector,
a. | the length of the arrow is drawn to a suitable scale. | b. | the direction of the
arrow shows the direction of motion. | c. | the length of the arrow represents the
speed. | d. | all of the above | e. | none of the
above |
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18.
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The resultant of two forces acting on a point is greatest when the angle between
them is
a. | 45 degrees | b. | 0 degrees | c. | 180 degrees | d. | 90
degrees | e. | 270 degrees |
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