8. From the slope of the best-fit line, determine the average acceleration. Record this information in the last column and the last line of the Data Table.

College Physics
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Author:Paul Peter Urone, Roger Hinrichs
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Chapter1: Introduction: The Nature Of Science And Physics
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Problem 23PE: If a marathon runner averages 9.5 mi/h, how long does it take him or her to run a 26.22-mi marathon?
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please help with question number 8
Com/s)
350
300
250
200
150
100T
50
0.1
0.15
0.2
0.25
0.35
O.05
Thme (sec)
Transcribed Image Text:Com/s) 350 300 250 200 150 100T 50 0.1 0.15 0.2 0.25 0.35 O.05 Thme (sec)
Data Table:
Dot Number
Travel Timet
(sec)
Length of
Section Around
Each Dot s
Average Speed
Over Each
Section cm/s
Average
Acceleration a
cm/s
(cm)
0.0835
59.8 cmls
4 cm
2.
10.167
o em
149.7cm/s
3.
10.2505
15.3 cm
229.०cmls
lo.324
19.5 cm
291.9 cm/s
7. Draw a speed-time graph of the data. Plot the time on the x-axis.
Since the average velocity is taken over a short period of time, it approximates the final SlOpe
(instantaneous) velocity. Plot the "final velocity" on the y-axis. Draw the best-fit line. Rise=Run)
8. From the slope of the best-fit line, determine the average acceleration.
(To Fnd
Record this information in the last column and the last line of the Data Table.
Questions:
1. What happens to the speed of the mass as it falls?
2. What kind of motion is demonstrated?
3. What kind of change would you expect (if any) if you used a greater mass? Support
your answer.
4. From your graph, determine the distance that the object has fallen. SHOW WORK.
Transcribed Image Text:Data Table: Dot Number Travel Timet (sec) Length of Section Around Each Dot s Average Speed Over Each Section cm/s Average Acceleration a cm/s (cm) 0.0835 59.8 cmls 4 cm 2. 10.167 o em 149.7cm/s 3. 10.2505 15.3 cm 229.०cmls lo.324 19.5 cm 291.9 cm/s 7. Draw a speed-time graph of the data. Plot the time on the x-axis. Since the average velocity is taken over a short period of time, it approximates the final SlOpe (instantaneous) velocity. Plot the "final velocity" on the y-axis. Draw the best-fit line. Rise=Run) 8. From the slope of the best-fit line, determine the average acceleration. (To Fnd Record this information in the last column and the last line of the Data Table. Questions: 1. What happens to the speed of the mass as it falls? 2. What kind of motion is demonstrated? 3. What kind of change would you expect (if any) if you used a greater mass? Support your answer. 4. From your graph, determine the distance that the object has fallen. SHOW WORK.
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