AnswersAA-F26 Physical ScienceSpeed and Velocity

Lab: Motion Answers

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Use the graph of speed versus time to answer the questions about acceleration.

Answers:
Blank 1:A
Blank 2:C
Blank 3:B
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Question text not available

Answer:

2.15

3

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Answer:

0.13

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Throughout the reflection, make sure you have a copy of the Student Guide and your data tables. Use the drop-down menus to complete the statements.

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In this experiment, the was intentionally manipulated. This was the independent variable.:height of the track
The dependent variable measured was the .:speed of the car
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✔ speed of the carheight of the trackdistance traveled

A
✔ speed of the car
B
height of the track
C
distance traveled
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You are leaving for a party at your cousin’s house in a city that is 150 km away. You will travel at an average rate of 50 km/hr. How long will it take you to arrive?

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⇒ 3:86651
Blank 2:60
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Question text not available

Answer:

60

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Use the table to answer the questions.

Question illustration
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Blank 1:86625
Blank 2:2.15
Blank 3:0.13
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Match the measurement with the proper SI unit.

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Acceleration::Meters per second squared
Velocity::Meters per second
Distance::Meters
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Why does increasing the number of trials increase confidence in the results of the experiment?

Answer:

Increasing the number of trials increases confidence because it reduces the impact of random errors or imprecise measurements on the final results. By performing multiple trials, you can calculate an average value, which is generally a more accurate representation of the true value than any single trial. It also allows you to identify and account for outliers.

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Calculate speeds for each track. How much faster was the car on the higher track than the lower track?

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Based on the time measurements in the table, what can be said about the speed of the car on the lower track as compared to the higher track?:Cars travel faster on the higher track.
How can the reasoning for the above answer be best explained? On the higher track, the elapsed time is .:shorter
Selection 3:0.56 m/s
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Read the elapsed time on the stopwatch and answer the questions.

Question illustration
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Blank 1:86641
Blank 2:4
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Use the graph of distance versus time to complete the sentences.

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The cars on the higher track travel the cars on the lower track, in the same time.:farther than
This means that the cars on the higher track have a average speed than those on the lower track.:greater
This is demonstrated by the of the higher track line being greater than the slope of the lower track line.:slope
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Use the graph of speed versus time to answer the questions about acceleration.

Question illustration
Answers:
Blank 1:86646
Blank 2:C
Blank 3:B
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Meters✔ Meters per secondMeters per second squared

A
Meters
B
✔ Meters per second
C
Meters per second squared
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What did you include in your answer? Check all that apply.

A
It prevents one bad measurement from affecting the outcome of the experiment.
B
It allows one to calculate an average value.
C
The average value is typically a better representation of the true value.
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✔ shorterlongerequal

A
✔ shorter
B
longer
C
equal
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Question text not available

Answer:

4

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slowersimilar✔ greater

A
slower
B
similar
C
✔ greater
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Question text not available

Answer:

C

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Lab: Motion Answers — AA-F26 Physical Science