Chapter 3, Section 2

Newton’s 1st Law of Motion: Life and Death before and after Seat Belts

Grade Tests (MC)

November 15, 2010HW: 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

3.2 Learning Objectives and Success Criteria-Please write on a new left side page in your notebook

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

Chapter Challenge!

http://www.youtube.com/watch?v=HA-clh8INNY

Pg. 256-257

Snowball!!!

Explain Newton’s 1st Law

How do you think it works in car crashes?

November 16, 2010HW: 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: Predict what will happen to

the “man” at higher speeds when he doesn’t have a seat belt.

What will happen to him when he wears a seatbelt?

Agenda: Do Now Investigate

Investigate: Part A

#1 Set up

#2 Prediction, Data

#3 Prediction, Data

Investigate: Part B

Set upPrediction: What do you think will

happen to the passenger as the “seat belts” get wider?

#1-3 Data Collection#4-Answer in your notebook

Exit Slip:

Provide evidence that Newton’s 1st law is working in collisions.

How do seatbelts affect Newton’s 1st law during collisions?

November 16, 2010HW: 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

Physics Talk-

Read the whole physics talkUse 2-column notes to organize and

take notes on the physics talk

How do to 2 column notes

Question

Word

Main Idea

Answer

Definition

Details

Pressure!

What is pressure?

How do you calculate pressure?

Force per area, where force is perpendicular to the surface.

P=F/AP=pressure (pascal)F=Force (Newtons)A=Area (m2)

Pressure sample problems

Pg. 271-272

Exit Ticket

What are the 3 collisions that occur in any accident?

November 17, 2010HW: None

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

PTG Review

Groups select problems

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?

LO and SC Reflection

Complete LO and SC reflection in notebook

Share out answersWhat is a “good” answer? How do you

know?

Quiz