RIO SOLADO - PHY 111 Midterm 1 questions and
answers 2026\2027 A+ Grade
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
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:
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
Examine the velocity vs. time graph below. What is the total distance?
- correct answer 8 m
answers 2026\2027 A+ Grade
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
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:
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
Examine the velocity vs. time graph below. What is the total distance?
- correct answer 8 m
