How Small is Small? Image:

Monday & Tuesday Sept. 22 & 23

Vocabulary Sheets Due Sept. 24

Energy Super Heroes Presentations start on Sept. 24 Image: 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 s What’s his average velocity? m

Classwork Pages (in Chapter 3) –Applying Concepts 1-4 –Problems 1-3 Image:

How fast must Superman fly to circle the globe as fast as shown here?

Displacement Given velocity and time Recall: Rearranging to solve for change in position:

Position vs. Time Graphs

What do these graphs represent?

Position vs. Time Graphs What do these graphs represent?

Classwork Pages (in Chapter 3) –Applying Concepts 6-9 –Problems 4, 6, 9 Image:

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 Graph Changing 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 (in Chapter 3) –Applying Concepts 10 & 11 –Problems 21, 23, 25 Image: