collect handouts index card clickers usage form. i am 1.female 2.male
TRANSCRIPT
![Page 1: Collect handouts Index card Clickers usage form. I am 1.Female 2.Male](https://reader036.vdocuments.us/reader036/viewer/2022062322/56649e0c5503460f94af5bea/html5/thumbnails/1.jpg)
Collect handouts
• Index card
• Clickers usage form
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I am
26
13 1. Female
2. Male
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Your age is
0
0
0
0
0
0
1
6
26
5 1. Under 18
2. 18-24
3. 25-29
4. 30-34
5. 35-39
6. 40-44
7. 45-49
8. 50-54
9. 55-60
10. Over 60
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I have graduated from high school.
5
34 1. Yes
2. No
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Which best describes your ethnic background?
3
3
11
4
0
10
0
6
3 1. African-American
2. Asian-American
3. Native-American
4. Hispanic-American
5. African (not American)
6. Asian (not American)
7. White, non-Hispanic
8. Multicultural
9. Other
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How would most of your friends have answered the previous question?
4
10
5
11
9 1. Most of them would answer similarly
2. Many similarly, some differently
3. Half similarly, half differently
4. Many differently, some similarly
5. Most of them would answer differently
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Do you want to teach when you finish school?
3
7
0
30 1. No
2. I am training to be a teacher
3. I’m thinking about becoming a teacher
4. I already teach
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How many hours a week are you employed?
20
4
8
5
2 1. more than 35
2. 25- 34
3. 15-24
4. 5-14
5. less than 5
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Why are you taking this course?
3
6
8
20
3 1. Purely for fun
2. As a prerequisite for Physics 1A
3. I need to take both 2A & 2B
4. I need specifically this 1 physics class
5. Trying to “find myself”
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I feel ___ about this class. Select all that apply.
2
19
22
34
12 1. enthusiastic
2. interested
3. worried/nervous
4. confident
5. nothing
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Kinematics -- definitions
• Position• Displacement• Average velocity• Instantaneous Velocity (what we’ll use) = • Acceleration – WAIT TO DO THIS TIL LATER.
Vectors.We will start in only 1-D, L/R, U/D, NS/EW etc.Graphical interpretations, generate the formulae
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Sign choices
• To the right (east) always +
• To the left (west) always –
• Up (north) always +
• Down (south) always –
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Notation
• Use notation on the “format” handout
• Delta symbol: – What it means
• Do examples of +/- x, v
Average velocity definition
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A car travels 60 mph for 2 minutes and 20 mph also for 2 minutes. Which is of the following is
closest to the average velocity?
0
0
0
0
0 1. 60 mph
2. 50 mph
3. 40 mph
4. 30 mph
5. 20 mph
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A car travels 60 mph for 2 minutes and 20 mph for 60,000 minutes. Which is of the following is closest
to the average velocity?
0
0
0
0
0 1. 60 mph
2. 50 mph
3. 40 mph
4. 30 mph
5. 20 mph
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Is the average velocity:
0
0
0 1. More than 20 mph
2. Less than 20 mph
3. Equal to 20 mph
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A car travels 60 mph for 30 minutes and 20 mph for 60 minutes. Which is of the following is closest
to the average velocity?
0
0
0
0
0 1. 60 mph
2. 50 mph
3. 40 mph
4. 30 mph
5. 20 mph
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2 cars paths• Car A goes:
– 60 mph for an hour– Takes a 15 min break– 30 mph for ½ hr
• Car B starts at the same place at the same time AND finishes at the same place at the same time. How fast did car B go?
• This question is the same as an easier version: ….
• Draw graphs of x-t (slope) and v-t (area)• Discuss slope of v-t graph BRIEFLY.