how small is small? image:
TRANSCRIPT
How Small is Small?
Image: http://en.marveldatabase.com/Ant-Man
Monday & Tuesday
Sept. 22 & 23
Vocabulary Sheets DueSept. 24
Energy Super Heroes
Presentations start on Sept. 24
Image: http://www.coverbrowser.com/covers/action-comics
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
How Far?
0
The Flash’s position
Increasing positive position
Increasing negative position
Position, velocity, and acceleration require reference points.
Distance
How do you define distance?Does it require a reference point?
0
Distance
How do you define distance?Does it require a reference point?
0
No. Distance is how far 2 points are separated.It’s an example of a scalar quantity.
Velocity and acceleration are vector quantities.
How Fast?
The Flash runs 1000 m in 3 sWhat’s his average velocity?
0 1000 m
Classwork
• Pages 58-60 (in Chapter 3)– Applying Concepts
1-4– Problems 1-3
Image: http://www.coverbrowser.com/covers/the-flash
http://www.youtube.com/watch?v=oa9t_m-38Z4
http://www.youtube.com/watch?v=HNFftA1Pry0
How fast must Superman fly to circle the globe as fast as shown here?
DisplacementGiven velocity and timeRecall:
Rearranging to solve for change in position:
Position vs. Time Graphs
Position vs. Time GraphsWhat do these graphs represent?
Position vs. Time GraphsWhat do these graphs represent?
Classwork
• Pages 58-60 (in Chapter 3)– Applying Concepts
6-9– Problems 4, 6, 9
Image: http://www.coverbrowser.com/covers/the-flash
Wednesday & Thursday
Sept. 24 & 25
Present our “Energy Superhero” projects
Friday
Sept. 26
Kinematics Vocabulary
Due week of November 3
This week: •average velocity, •final velocity, •frames of reference, •initial velocity, •instantaneous velocity, •kinematics, •mechanics, •scalar, •vector
Negative Velocity?Refer to Example Problem on p. 52.
Velocity vs. Time GraphChanging it up: put velocity on the y-axis.
velocity
time
What does the corresponding position vs. time graph look like?
Velocity vs. Time Graph
Check out the area under the graph line.
velocity
time
What’s the area of a triangle?What’s the meaning of this area?
Classwork
• Pages 58-61(in Chapter 3)
– Applying Concepts 10 & 11
– Problems 21, 23, 25
Image: http://www.coverbrowser.com/covers/the-flash