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RIO SALADO - PHY 111 MIDTERM 1 2025
UPDATED ACTUAL EXAM WITH
CORRECT SOLUTIONS.
A student moves 8.0 m to the west, 6.0 m to the north, and 10.0 m to
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the east. What is the magnitude of the displacement? - correct
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answer- 6.3 m
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Examine the position vs. time graph below. What is the velocity of
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the object at t = 5.0 s? - correct answer- -5 m/s
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A student measures the mass of an object at 4.68 g and the
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volume of the object at 2.3 mL. The student calculates the density
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as 2.03478 g/mL. A second student disagrees with the density.
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Which of the following statements would explain why the second
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student disagrees? - correct answer- The number of decimals in
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the answer does not show proper precision.
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Examine the position vs. time graph below. Which of the
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following correctly describes the motion of the object? - correct
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answer- Forwards at a constant speed and then backward at a
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constant speed
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,2 | Page
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A car moving at a constant 25 m/s travels for 3.0 seconds. What
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is the distance traveled by the car? - correct answer- 75 m
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A student measures the mass of an object at 4.68 g. Which of the
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following statements is most accurate? - correct answer- he first
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two digits are measured and the last digit is estimated.
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A student models the constant speed motion of an object with the
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following equation:
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x = (4 m/s) t + (-15 m)
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Which of the following descriptions of motion is consistent with
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this equation? - correct answer- The object starts at a negative
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position and travels forwards.
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How much time will it take for an object traveling at a constant
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speed of 20 m/s to travel 15 m? - correct answer- 0.75 s
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A student models the constant speed motion of an object with
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the following equation:
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, 3 | Page
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x = (-2 m/s) t + (4 m)
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Which of the following descriptions of motion is consistent with this
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equation? - correct answer- The object starts at a positive position
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and travels backwards.
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Examine the velocity vs. time graph below. Which of the | | | | | | | | |
following correctly describes the motion of the object? - correct
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answer- Constant speed forwards and then constant speed
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backward
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Convert 35.0 mph to m/s. (1 mi = 1.6 km) - correct answer- 15.6 m/s
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Which of the following is a vector measurement? - correct
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answer- Displacement
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Convert 4200 cm to miles. (1 mi = 1.6 km) - correct answer-
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0.026 mi |
A car travels forwards at a constant speed of 30 m/s for 5.0
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seconds. How far will the car move in this time? - correct
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answer- 150 m
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| | | | | |
RIO SALADO - PHY 111 MIDTERM 1 2025
UPDATED ACTUAL EXAM WITH
CORRECT SOLUTIONS.
A student moves 8.0 m to the west, 6.0 m to the north, and 10.0 m to
| | | | | | | | | | | | | | | |
the east. What is the magnitude of the displacement? - correct
| | | | | | | | | | |
answer- 6.3 m
| | |
Examine the position vs. time graph below. What is the velocity of
| | | | | | | | | | |
the object at t = 5.0 s? - correct answer- -5 m/s
| | | | | | | | | | | |
A student measures the mass of an object at 4.68 g and the
| | | | | | | | | | | |
volume of the object at 2.3 mL. The student calculates the density
| | | | | | | | | | | |
as 2.03478 g/mL. A second student disagrees with the density.
| | | | | | | | | |
Which of the following statements would explain why the second
| | | | | | | | | |
student disagrees? - correct answer- The number of decimals in
| | | | | | | | | |
the answer does not show proper precision.
| | | | | | |
Examine the position vs. time graph below. Which of the
| | | | | | | | |
following correctly describes the motion of the object? - correct
| | | | | | | | | |
answer- Forwards at a constant speed and then backward at a
| | | | | | | | | | |
constant speed
| |
,2 | Page
| | | | | |
A car moving at a constant 25 m/s travels for 3.0 seconds. What
| | | | | | | | | | | |
is the distance traveled by the car? - correct answer- 75 m
| | | | | | | | | | | |
A student measures the mass of an object at 4.68 g. Which of the
| | | | | | | | | | | | |
following statements is most accurate? - correct answer- he first
| | | | | | | | | |
two digits are measured and the last digit is estimated.
| | | | | | | | | |
A student models the constant speed motion of an object with the
| | | | | | | | | | |
following equation:
| |
x = (4 m/s) t + (-15 m)
| | | | | | |
Which of the following descriptions of motion is consistent with
| | | | | | | | |
this equation? - correct answer- The object starts at a negative
| | | | | | | | | | |
position and travels forwards.
| | | |
How much time will it take for an object traveling at a constant
| | | | | | | | | | | |
speed of 20 m/s to travel 15 m? - correct answer- 0.75 s
| | | | | | | | | | | | |
A student models the constant speed motion of an object with
| | | | | | | | | |
the following equation:
| | |
, 3 | Page
| | | | | |
x = (-2 m/s) t + (4 m)
| | | | | | |
Which of the following descriptions of motion is consistent with this
| | | | | | | | | |
equation? - correct answer- The object starts at a positive position
| | | | | | | | | | |
and travels backwards.
| | |
Examine the velocity vs. time graph below. Which of the | | | | | | | | |
following correctly describes the motion of the object? - correct
| | | | | | | | | |
answer- Constant speed forwards and then constant speed
| | | | | | | |
backward
|
Convert 35.0 mph to m/s. (1 mi = 1.6 km) - correct answer- 15.6 m/s
| | | | | | | | | | | | | |
Which of the following is a vector measurement? - correct
| | | | | | | | |
answer- Displacement
| |
Convert 4200 cm to miles. (1 mi = 1.6 km) - correct answer-
| | | | | | | | | | | |
0.026 mi |
A car travels forwards at a constant speed of 30 m/s for 5.0
| | | | | | | | | | | |
seconds. How far will the car move in this time? - correct
| | | | | | | | | | | |
answer- 150 m
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