MC	Physics	Standard: 01
Objective: 01. Describe the motion of an object in terms of position, time, and velocity.
ILO:

The following table gives the position of a boat at various times.

Position (m)	Time (s)
25	1
22.5	3
20	5
17.5	7
15	9
12.5	11

1. What is the average velocity of the boat over the time interval shown?

a. ∆12.5 m/s

b. ∆1.25 m/s

c. 1.25 m/s

d. 12.5 m/s

2. What can be concluded about the motion of the boat from the given data?

a. The boat is driving towards the 0m location.

b. The boat is driving backwards towards the finish line.

c. The boat is accelerating towards the 0m location.

d. The boat is driving in circles around the 0m location.

Correct Answers:

1. b

2. a

MC	Physics	Standard: 01
Objective: 01. Describe the motion of an object in terms of position, time, and velocity.
ILO:

Four cities all lie along a straight line as shown in the diagram. A delivery driver departs from City B, drives to City D, and then Drives to City A. The total time for the trip is 0.70 hours.

1. What is the driverÕs displacement at the end of the described trip?

a. 5 miles

b. 11 miles

c. 21 miles

d. 37 miles

2. What distance does the driver cover during the described trip?

a. 11 miles

b. 21 miles

c. 37 miles

d. 42 miles

3. What is the driverÕs average velocity during the described trip?

a. 7.1 mi/hr

b. 30 mi/hr

c. 52.9 mi/hr

d. 60 mi/hr

4. What is the driverÕs average speed during the described trip?

a. 7.1 mi/hr

b. 30 mi/hr

c. 52.9 mi/hr

d. 60 mi/hr

Correct Answers:

1. a

2. c

3. a

4. c

MC	Physics	Standard: 01
Objective: 01. Describe the motion of an object in terms of position, time, and velocity.
ILO:

The graph shows the position of an object at several times.

1. What is the objectÕs average velocity from t = 0s to t = 8s?

a. 0.44 m/s

b. 0.51 m/s

c. 0.77 m/s

d. 1.75 m/s

2. What is the objectÕs velocity at t = 8s?

a. ∆1.33 m/s

b. ∆0.75 m/s

c. 0.75 m/s

d. 1.33 m/s

Correct Answers:

1. c

2. b

I	Physics	Standard: 01
Objective: 01. Describe the motion of an object in terms of position, time, and velocity.
ILO:

The diagram above represents the position of two bowling balls (A & B) at one-second intervals. The arrows are 2.0 meters apart.

1. What can you observe about the motion of the two bowling balls?

a. Both balls move at the same velocity.

b. Ball A moves faster than Ball B.

c. Ball A moves slower than Ball B.

d. Neither ball is moving.

2. What is the average velocity of Ball A?

A. 5.0 m/s

B. 4.0 m/s

C. 2.5 m/s

D. 2.0 m/s

E. 1.0 m/s

3. What was the average velocity of Ball B?

A. 5.0 m/s

B. 4.0 m/s

C. 2.5 m/s

D. 2.0 m/s

E. 1.25 m/s

Correct Answers:

1. c

2. d

3. c

E	Physics	Standard: 01
Objective: 01. Describe the motion of an object in terms of position, time, and velocity.
ILO:

You are to design an experiment to describe the motion of a simple battery powered car. Describe any equipment you need (in addition to the car) and the data you would collect with the equipment on your list. Defend your choice of equipment. Draw a diagram clearly showing how you would set up and use the equipment in order to collect your data. Write the equation(s) and draw the graph(s) that you would expect to obtain from the data you collect. Label the graph axes with names and units that are descriptive of the data you would be collecting.

Scoring Guide:

The car can be assumed to have a constant speed, so the only critical equipment needed would be a meter stick and a stopwatch. There may be other small items that would be helpful, but that arenÕt strictly needed. The equation would be that for constant velocity motion: D x = v t. The graph should have distance or position on the vertical axis and time on the horizontal axis both with appropriate units. Since no data is to be actually collected, numerical values on the axis would be out of place. The graph should be a line with constant positive slope, most likely starting at the origin.

Scoring Rubric:

Score	Equipment List/Data Collected	Diagram	Equation/Graphs
5	The list is complete and correct. No unused or unnecessary items are listed. The purpose for using each item on the list is clearly stated. The data collected will lead to an accurate description of motion.	The diagram clearly shows how the described equipment is to be used.	The equations given are correct and clearly indicate that the student understands the task. The graph is clearly tied to the data collected. The axes are correctly labeled with variables and units that are correct and relevant to the description they give of the experiment.
4	The list is complete and correct. One unused or unnecessary item is listed. The purpose for using each item on the list is clearly stated. The data collected may lead to an accurate description of motion.	The diagram shows how the described equipment is to be used, but leaves some room for interpretation.	The equations given are correct and clearly indicate that the student understands the task. The graph is clearly tied to the data collected. The axes are correctly labeled, but some of the variables and units may be incorrect for the description given of the experiment.
3	The list is complete. Two or three unused or unnecessary items are listed. The purpose for using each item on the list is stated, but may be incorrect. The data collected will not likely lead to an accurate description of motion.	The diagram shows the described equipment, but its use is unclear.	The equations given indicate that the student does not completely understand the task. The graph is tied to the data collected. The axes are not labeled, or the variables and units are incorrect for the description given of the experiment.
2	The list is incomplete and/or incorrect. Many unused or unnecessary items are listed. The purpose for using each item on the list is unclear, not stated or wrong. The data collected will not lead to an accurate description of motion.	The diagram shows some of the described equipment, but its use is unclear or incorrect.	The equations appear to be random attempts to get points. The graph is not tied to the data collected. The axes are not labeled, or the variables and units are incorrect for the description given of the experiment.
1	The list has serious deficiencies. Most items are unused or unnecessary. No clear purpose for using each item is described. The data collected will not be useful in describing motion.	The diagram shows some equipment, but bears little resemblance to the described experiment.	The equations appear to be random attempts to get points or are not given. The graph is not tied to the data collected or is missing. The axes are not labeled, the variables and units are incorrect.

E	Physics	Standard: 01
Objective: 01. Describe the motion of an object in terms of position, time, and velocity.
ILO:

The data given below were collected from two different objects. Write a paragraph or two explaining the differences in the motion depicted. Use precise vocabulary (e.g. position, velocity, acceleration, etc.). Be sure to include the reasons for how you know. You will be graded on the completeness and correctness of your answer.

	Object A	Object B
Time (s)	Position (m)	Position (m)
0.00	0.0	0.000
0.25	0.5	0.094
0.50	1.0	0.375
0.75	1.5	0.844
1.00	2.0	1.500
1.25	2.5	2.344
1.50	3.0	3.375
1.75	3.5	4.594
2.00	4.0	6.000

Correct Answers:

Object A is constant velocity, v = 2m/s

Object B is constant acceleration, a = 3m/s²

Both objects start at the same location at the same time.

How students know may include graphs, equations, and/or numerical analysis.

Both objects are moving in the same direction.

P	Physics	Standard: 01
Objective: 01. Describe the motion of an object in terms of position, time, and velocity.
ILO:

Becky rode her bicycle 300.00 meters due east in 30.0 seconds. She then peddled directly south for 20.0 seconds at the same speed. She then peddled 50.0 meters directly north in 5.00 seconds.

a. What was the total distance that she peddled her bicycle?

b. What was her average speed?

c. What was her displacement?

d. How would you determine her average velocity?

Correct Answers:

a. Total distance = 300 m + 200 m + 50.0 m = 550 m (2pts)

b. 10 m/s

c. 335.4 m -- 26.6¡ south of due east

d. total displacement divided by total time

P	Physics	Standard: 01
Objective: 01. Describe the motion of an object in terms of position, time, and velocity.
ILO:

The following data were obtained from a car.

Time, t (s)	Position, x (m)
0	50
5	200
10	350
15	500
20	650

1. Construct an appropriate graph of the data. Label the graph axes with variable names, units, and numerical values.

2. Which equation best represents the motion depicted by the data?

a. x = (150m/s)t + 0m

b. x = (150m/s)t + 50m

c. x = (30m/s)t + 0m

d. x = (30m/s)t + 50m

3. What is the average velocity of the car?

a. 30m/s

b. 35m/s

c. 40m/s

d. 50m/s

Correct Answers:

1. Axes labeled with correct information as instructed.

Time on horizontal axis, position on vertical axis.

Linear graph: slope = 30m/s, intercept = 50m

2. d

3. a