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WorksheetsSection 2.1 Displacement and Velocity
Total questions: 10
Worksheet time: 9mins
Which of the following situations represents a positive displacement of a carton? Assume positive position is measured vertically upward along a y-axis.
A delivery person waiting for an elevator lowers a carton onto a dolly.
When the elevator doors open, the delivery person lifts the dolly over the threshold of the elevator.
The delivery person pushes the dolly to the back of the elevator while pressing a floor button.
The door closes and the elevator moves from the 10th to the 4th floors.
Refer to the figure above to answer questions 2–4.
_____ 2. What is the correct description of any change of position farther to the right of zero?
positive displacement
positive distance
positive position
positive change of displacement
A dog walks from +4 m to +2 m. Which of the following statements is true about the dog’s motion?
xi = +2 m
xf = +2 m
vavg = 2 m/s
What is the maximum negative displacement a dog could have if it started its motion at +3 m?
+7 m
+3 m
-3 m
-7 m
Rank in decreasing order the displacements of objects having the following pairs of average velocity and time of motion.
I. vavg = +2.0 m/s, Δ t = 2.0 s
II. vavg = +3.0 m/s, Δ t = 2.0 s
III. vavg = -3.0 m/s, Δ t = 3.0 s
I, II, III
II, III, I
II, I, III
III, II, I
Rank in decreasing order the distances traveled by objects having the following pairs of average velocity and time of motion.
I. vavg = +2.0 m/s, Δ t = 2.0 s
II. vavg = +3.0 m/s, Δ t = 2.0 s
III. vavg = -3.0 m/s, Δ t = 3.0 s
I, II, III
II, III, I
II, I, III
III, II, I
The graph above shows the motion of a dog pacing along a fence. Refer to the graph to answer questions 7-10.
_____ 7. For the five time intervals shown, during how many intervals does the dog have the same average velocity?
0
1
2
3
The graph above shows the motion of a dog pacing along a fence. Refer to the graph to answer questions 7-10.
For the five time intervals shown, during how many intervals does the
dog pace at the same average speed?
0
1
2
3
Describe the dog’s motion when it is at 1.0 m.
(a)
Calculate: What is the dog’s average velocity for total displacement?
(a)
