1. Newton’s 1st Law of Motion: Life and Death before and after Seat Belts
Chapter 3, Section 2
Newton’s 1st Law of Motion: Life and Death before and after Seat Belts

2. November 15, 2010 HW: 3.2 PTG #1-7, Skip 4, pg 274 Due Wed
Learning Objectives:
Explain how Newton’s 1st Law applies to collisions between objects
Apply the relationship between pressure, force and area to different situations
Process skill: Make a prediction based on the question using both the independent and dependent variable
Success Criteria:
Define Newton’s 1st Law
Describe how inertia relates to mass and velocity of an object
Explain the forces in a collision, Identify the relative magnitude and direction
Explain how seatbelts work according to Newton’s 1st Law
Describe how different widths on a seatbelt makes it more/less effective and why
Explain the relationship between pressure, force, and area
Do Now:
WDYS/WDYT pg. 266
Agenda:
Do Now
Investigate

3. Chapter Challenge! http://www.youtube.com/watch?v=HA-clh8INNYPg

4. Snowball!!! Explain Newton’s 1st Law
How do you think it works in car crashes?

5. Investigate: Part A
#1 Set up
#2 Prediction, Data
#3 Prediction, Data

6. Investigate: Part B Set up
Prediction: What do you think will happen to the passenger as the “seat belts” get wider?
#1-3 Data Collection
#4-Answer in your notebook

7. Exit Slip:
How does Newton’s 1st Law apply to car crashes?

8. November 16, 2010 HW: 3.2 PTG #1-7, Skip 4, pg 274 Due Wed
Learning Objectives:
Explain how Newton’s 1st Law applies to collisions between objects
Apply the relationship between pressure, force and area to different situations
Process skill: Make a prediction based on the question using both the independent and dependent variable
Success Criteria:
Define Newton’s 1st Law
Describe how inertia relates to mass and velocity of an object
Explain the forces in a collision, Identify the relative magnitude and direction
Explain how seatbelts work according to Newton’s 1st Law
Describe how different widths on a seatbelt makes it more/less effective and why
Explain the relationship between pressure, force, and area
Do Now:
Why do you think the seatbelts did less damage to the passenger as they got wider?
Agenda:
Do Now
Physics Talk

9. Physics Talk- Read the whole physics talk
Use 2-column notes to organize and take notes on the physics talk

10. How do to 2 column notes Question Word Main Idea Answer Definition
Details

11. Pressure! What is pressure? How do you calculate pressure?
Force per area, where force is perpendicular to the surface.
P=F/A
P=pressure (pascal)
F=Force (Newtons)
A=Area (m2)

12. Pressure sample problemsPg

13. Exit Ticket
What are the 3 collisions that occur in any accident?

14. November 17, 2010 HW: None Do Now: Agenda: #9 pg. 275 Do Now
Learning Objectives:
Explain how Newton’s 1st Law applies to collisions between objects
Apply the relationship between pressure, force and area to different situations
Process skill: Make a prediction based on the question using both the independent and dependent variable
Success Criteria:
Define Newton’s 1st Law
Describe how inertia relates to mass and velocity of an object
Explain the forces in a collision, Identify the relative magnitude and direction
Explain how seatbelts work according to Newton’s 1st Law
Describe how different widths on a seatbelt makes it more/less effective and why
Explain the relationship between pressure, force, and area
Do Now:
#9 pg. 275
Agenda:
Do Now
PTG Review
Essential Question
Quiz

15. PTG Review
Groups select problems

16. Essential Questions
Use Newton’s 1st law to explain why a passenger keeps moving when a vehicle suddenly stops.
What evidence do you have from your experiments that collisions at higher speeds will have greater effect on the passenger?
How does what you learned in this section help you design a safety device for a collision even though you don’t know the exact circumstances of the collision?

17. Quiz