Name / Date
Grade / 9 / Cluster
1. 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
2. Which of the following is the equation for average velocity?
a. c. v = DxDt
b. d.
3. Which of the following situations represents a negative displacement? (Assume positive position is measured vertically upward along a y-axis.)
a. A cat stands on a tree limb.
b. A cat jumps from the ground onto a tree limb.
c. A cat jumps from a lower tree limb to a higher one.
d. A cat jumps from a tree limb to the ground.
4. Which of the following units is the SI unit of velocity?
a. meter c. meter per second
b. meter·second d. second per meter
5. In the graph above, what is the correct description of any location to the left of the zero?
a. negative displacement c. negative position
b. negative distance d. negative change of displacement
6. In the graph above, a toy car rolls from +3 m to +5 m. Which of the following statements is true?
a. xf = +3 m c. Dx = +3 m
b. xi = +3 m d. vavg = 3 m/s
7. Suppose you are given a position versus time graph. The slope of a line drawn tangent to a point on the curve of this graph describes what quantity?
a. acceleration c. instantaneous velocity
b. displacement d. position
8. According to the graph above, during which interval is the cat at rest?
a. 0.0–5.0 s c. 10.0–15.0 s
b. 5.0–10.0 s d. 15.0–20.0 s
9. According to the graph above, the cat has the fastest speed during which interval?
a. 0.0–5.0 s c. 10.0–15.0 s
b. 5.0–10.0 s d. 15.0–20.0 s
10. According to the graph above, during which interval does the cat have the greatest positive velocity?
a. 0.0–5.0 s c. 10.0–15.0 s
b. 5.0–10.0 s d. 15.0–20.0 s
11. Which of the following line segments on a position versus time graph is physically impossible?
a. a horizontal line c. a straight line that slopes to the right
b. a straight line that slopes to the left d. a vertical line
problem solving
12. If the position of a car does not change with respect to a fixed frame of reference, describe the motion of the car.
13. What quantity describes the difference between an object’s initial position and the object’s final position?
14. What is the ratio of an object’s displacement to the time interval during which the displacement occurred?
15. Distinguish between the displacement of a traveler who takes a train from New York to Boston and the displacement of a traveler who flies from Boston to New York.
16. If a cat moves from a negative position to a positive position, is the cat’s displacement negative or positive? Explain.
17. Explain how a dog that has moved can have a displacement of zero.
18. Construct a graph of position versus time for the motion of a dog, using the data in the table above. Explain how the graph indicates that the dog is moving at a constant speed.
19. Construct a graph of position versus time for the motion of a dog, using the data in the table above. What is the dog’s average velocity?
20. A horse trots past a fencepost located 12 m to the left of a gatepost. It then passes another fencepost located 24 m to the right of the gatepost 11 s later. What is the average velocity of the horse?
21.A biker travels at an average speed of 18 km/h along a 0.30 km straight segment of a bike path. How much time does the biker take to travel this segment?
22.If a truck travelled 40m in 10s what is the speed?
23. If a car travels 40m due North, in 10s what is the velocity?
24. a. Amirah drives to a shopping center exactly 10 Km from her home and it takes her precisely 16 minutes
to travel between the two locations, what is her average speed?
b. The shopping centre is due East, from her home, what is her average velocity?
c. When she reaches her home again, what is her total displacement?
d. What was the total distance she travelled?
e. It took her 12mins to drive home, what was her average speed?
f. What was her average velocity?
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