1. Negative Acceleration: Braking Your Automobile
Chapter 1, Section 5

2. Date: September 9, 2013 HW: PTG pg. 88, #1-4, Due Mon
Do Now (NB pg ?):
WDYS
WDYT
TB pg. 75
Read Investigate #1-4
TB pg
Agenda:
Do Now
Objective & Success Criteria
Investigate
Physics Talk
Quiz 1.5
PTG
Learning Objective: Understand how negative acceleration relates to braking and stopping distance
Success Criteria:
Plan and carry out an experiment to relate braking distance to initial speed
Determine braking distance
Examine accelerated motion

3. Investigate: Complete #1-3 with your group
Check procedures with LePera
Create data table
Check with LePera
Complete #4

4. Sept 10, 2013 HW:PTG pg. 88, #1-4, Due Mon
Finish procedures and data table
Set up and collect data
Remember you are measuring the SPEED at the bottom of the ramp and BRAKING distance in METERS!
Analyze Data
Average speed AND distance for EACH height

5. HW:PTG pg. 88, #1-4, Due Mon Do Now: Agenda:
Find Averages
Complete #5 a ,b on pg. 77
One group member draw your graph on the board
Complete #5c-e
Agenda:
Do Now
Investigate 5-8
Physics Talk
Checking up
Quiz
Learning Objective: Understand how negative acceleration relates to braking and stopping distance
Success Criteria:
Plan and carry out an experiment to relate braking distance to initial speed
Determine braking distance
Examine accelerated motion

6. Investigate #5-8
As a class

7. Physics Talk What is negative acceleration?
Draw an example of negative acceleration
Change in velocity with respect to time by decreasing speed in the positive direction or increasing speed in the negative direction

8. Physics Talk
How do you calculate braking distance?
Vi2=-2ad
vi2
-2a d

9. Checking up pg. 82, #1-3

10. HW: None Do Now: Agenda:
Get out 1.5 PTG #1-4
Discuss answers with your group
Agenda:
1.5 PTG #1-4
1.5 Quiz
Computer Set up (p4)
Chapter Challenge Rubric
Chapter Challenge Work Day
Learning Objective: Understand how negative acceleration relates to braking and stopping distance
Success Criteria
Calculate negative acceleration and braking distance
Work on Chapter Challenge

11. 1.5 Quiz