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PHYS 102 January 2020 Online, section Wicker (0005), Spring 2020

Module 1 - Experiment - Motion (Lab)

INSTRUCTOR

Katharine Wicker Embry Riddle Aeronautical University, FL

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Current Score

QUESTION

POINTS

1 2 3 4 5 6 TOTAL SCORE

3.86/100 3.9%

SUN, JAN 19, 2020 6:59 PM HST

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Before beginning to work on this assignment, be sure that you have read Module 1 Â​ Motion and Module 1 Â​ Motion Â​ Instructions.

The experiment worksheet is linked here: Module 1 - Motion worksheet not from within the Instructions nor from within the Additional Materials.

WA allows three attempts to enter a correct answer/input for credit for each question/input. If your third attempt is incorrect, the question/input will receive no credit. When you enter an answer and click, “Submit for Testing,” a correct answer will receive a green check mark, and an incorrect answer will receive a red X.

Assignment Submission & Scoring

Assignment Submission

For this assignment, you submit answers by question parts. The number of submissions remaining for each question part only changes if you submit or change the answer.

Assignment Scoring

Your last submission is used for your score.

–/91.72 –/1.38 –/1.38 –/1.38 2.48/2.76 1.38/1.38

Due Date

Instructions

1. –/91.72 points ERAUColPhysMechL1 2.1.IL.001. My Notes Ask Your Teacher

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Use the exact values you enter to make later calculations.

Part I: Data

Part I: Questions

Complete Table 1. Record all data to three decimal places (e.g., 4.000 or 6.325 or 0.000). Do not include units in your answer.

Table 1

Initial Settings At (m)

Time (s)

Calculated Position (m)

Describe

20 0.00 Position (x) vs. Time graph

---Select---

40 Velocity (v) vs. Time graph

---Select---

50 Acceleration (a) vs. Time graph

---Select---

20 Position (x) vs. Time graph

---Select---

40 Velocity (v) vs. Time graph

---Select---

50 Acceleration (a) vs. Time graph

---Select---

x = 0.00 m v = 5.00 m/s a = 0.00 m/s2

x = 0.00 m v = 10.0 m/s a = 0.00 m/s2

Please include units in your answer.

• Use the correct unit abbreviation.

• Include a space between the value and the unit.

• To express exponents in your units, use a ^. For example, m/s2 would be m/s^2.

By observing the Position vs. Time graph in Step 2 of the instructions, what physical quantity does the slope of this line correspond to?

velocity (speed)

By observing the Position vs. Time graph in Step 2 of the instructions, what is the value of the slope of this line?

By observing the Velocity vs. Time graph in Step 3 of the instructions, what physical quantity does the slope of the line correspond to?

acceleration

By observing the Velocity vs. Time graph in Step 3 of the instructions, what is the value of the slope of this line?

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Part II: Data

Part II: Questions

Complete Table 2. Record all data to three decimal places (e.g., 4.000 or 6.325 or 0.000). Do not include units in your answer. Table 2

Initial Settings At (m)

Time (s)

Calculated Position

(m)

Calculated Velocity

(m/s)

Describe

20

Position (x) vs. Time graph

---Select---

40

Velocity (v) vs. Time graph

---Select---

50

Acceleration (a) vs. Time graph

---Select---

20

Position (x) vs. Time graph

---Select---

40

Velocity (v) vs. Time graph

---Select---

50

Acceleration (a) vs. Time graph

---Select---

I observed that as time increased, the velocity vector decreased in length. True

False

I observed that as time increased, the acceleration vector stayed the same length. True

False

x = 0.00 m v = 0.00 m/s a = 1.00 m/s2

x = 0.00 m v = 0.00 m/s a = 2.00 m/s2

Please include units in your answer.

• Use the correct unit abbreviation.

• Include a space between the value and the unit.

• To express exponents in your units, use a ^. For example, m/s2 would

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Part III: Data

Part III: Questions

be m/s^2.

By observing the Velocity vs. Time graph in Step 2 of the instructions, what physical quantity does the slope of this line correspond to?

---Select---

By observing the Velocity vs. Time graph in Step 2 of the instructions, what is the value of the slope of this line?

By observing the Acceleration vs. Time graph in Step 3 of the instructions, what is the numeric value of the slope of this line? Do not enter units for this answer.

By observing the Acceleration vs. Time graph in Step 3 of the instructions, what is the value of the acceleration (a) of this graph?

Complete Table 3. For this part of the data entry, record all data to the nearest whole number. Do not include units in your answer. Table 3

Initial Settings

Readings from the Graphs

DescribeDistance (m)

Time (s)

Velocity (m/s)

Acceleration (m/s2)

Position (x) vs. Time graph ---Select---

Velocity (v) vs. Time graph ---Select---

Acceleration (a) vs. Time graph ---Select---

x = 0.00 m v = 10.0 m/s a = −2.00 m/s2

Please include units in your answer.

• Use the correct unit abbreviation.

• Include a space between the value and the unit.

• To express exponents in your units, use a ^. For example, m/s2 would be m/s^2.

What is the value of the acceleration?

Describe what happens to the velocity vector as the car goes forward and then returns to 0.00 m. The velocity vector decreases until it gets to 25 m; it then changes direction and increases to the left.

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Show My Work (Optional)

A car starts at position with an initial velocity of 3.8 m/s and an acceleration of 0 m/s2. What is its position when the elapsed time is 6.5 s? (Please be sure to include units in your answer. Express your answer to one decimal point.)

61.8

Show My Work (Optional)

The velocity vector increases until it gets to 25 m; it then changes direction and decreases to the left.

The velocity vector decreases until it gets to 25 m; it then changes direction and decreases to the left.

The velocity vector does not change length.

From the Position vs. Time graph, read the furthest distance the car reaches from the starting point.

From the Position vs. Time graph, what is the time that the car reaches this furthest distance?

Using the time you found in the previous question and looking at the Velocity vs. Time graph, what is the velocity at this time?

Using the time you found above and looking at the Acceleration vs. Time graph, what is the acceleration at this time?

Considering your last two answers, is it possible for an object to have zero velocity while at the same time having a nonzero acceleration?

Yes

No

x = 0,

2. –/1.38 points ERAUColPhysMechL1 2.1.POST.001. My Notes Ask Your Teacher

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A car has an initial position of an initial velocity of 0 m/s, and a constant acceleration of 2.3 m/s2. What is its position when the time is 3.6 seconds? (Please be sure to include units in your answer. Express your answer to one decimal point.)

Show My Work (Optional)

A car has an initial position of an initial velocity of 0 m/s, and a constant acceleration of 4.0 m/s2. What is its velocity when the time is 5.5 seconds? (Please be sure to include units in your answer. Express your answer to one decimal point.)

Show My Work (Optional)

The figure shows a distance vs. time graph of an object with three distinct regions: I, II, and III.

(a) In the figure, the object's velocity is zero in the following region(s). (Select all that apply.)

x = 0 m,

x = 0 m,

3. –/1.38 points ERAUColPhysMechL1 2.1.POST.002. My Notes Ask Your Teacher

4. –/1.38 points ERAUColPhysMechL1 2.1.POST.003. My Notes Ask Your Teacher

5. 2.48/2.76 points Previous Answers ERAUColPhysMechL1 2.1.POST.004.

My Notes Ask Your Teacher

1/16/20, 5:07 PMModule 1 - Experiment - Motion - PHYS 102 January 2020 Online, section Wicker (0005), Spring 2020 | WebAssign

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Correct! (b) In the figure, the object's acceleration is negative in the following region(s). (Select all that apply.)

Correct!

Show My Work (Optional)

I

II

III

none of the above

I

II

III

none of the above

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The figure shows a distance vs. time graph of an object.

In the figure, the velocity of the moving object is zero.

constant (but not zero).

increasing.

decreasing.

not determinable.

Show My Work (Optional)

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6. 1.38/1.38 points Previous Answers ERAUColPhysMechL1 2.1.POST.005.

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