How Small is Small?

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How Small is Small?
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Monday Tuesday

• Sept. 22 23

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Vocabulary Sheets Due
Sept. 24
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Energy Super Heroes
Presentations start on Sept. 24
40 Accuracy of your presented physics solution
20 Submitted project paperwork turn in your presentation materials (PowerPoint file in most cases) all of the problems, solved completely and neatly and your Energy vocabulary sheet
20 Strength of your presentation (both oral and visual style will be considered)
20 Quality of your supporting information such as background story and physics explanations
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How Far?
The Flashs position
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Increasing positive position
Increasing negative position
Position, velocity, and acceleration require
reference points.
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Distance
0
How do you define distance? Does it require a
reference point?
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Distance
0
How do you define distance? Does it require a
reference point?
No. Distance is how far 2 points are
separated. Its an example of a scalar
quantity. Velocity and acceleration are vector
quantities.
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How Fast?
0
1000 m
The Flash runs 1000 m in 3 s Whats his average
velocity?
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Classwork

• Pages 58-60 (in Chapter 3)
• Applying Concepts 1-4
• Problems 1-3

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http//www.youtube.com/watch?voa9t_m-38Z4
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http//www.youtube.com/watch?vHNFftA1Pry0
How fast must Superman fly to circle the globe as
fast as shown here?
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Displacement
Given velocity and time Recall
Rearranging to solve for change in position
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Position vs. Time Graphs
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Position vs. Time Graphs
What do these graphs represent?
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Position vs. Time Graphs
What do these graphs represent?
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Classwork

• Pages 58-60 (in Chapter 3)
• Applying Concepts 6-9
• Problems 4, 6, 9

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Wednesday Thursday

• Sept. 24 25

Present our Energy Superhero projects
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Friday

• Sept. 26

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Kinematics Vocabulary
Due week of November 3

• This week
• average velocity,
• final velocity,
• frames of reference,
• initial velocity,
• instantaneous velocity,
• kinematics,
• mechanics,
• scalar,
• vector

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Negative Velocity?
Refer to Example Problem on p. 52.
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Velocity vs. Time Graph
Changing it up put velocity on the y-axis.
velocity
time
What does the corresponding position vs. time
graph look like?
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Velocity vs. Time Graph
Check out the area under the graph line.
velocity
time
Whats the area of a triangle? Whats the meaning
of this area?
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Classwork

• Pages 58-61 (in Chapter 3)
• Applying Concepts 10 11
• Problems 21, 23, 25

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