Forces Make a Lovely Pair ACTION REACTION NEWTON’S 3 RD LAW

Identify one form of energy in this picture ENTRY TASK: Note: Entry Tasks are 10% of your grade

 Read Conceptual Physics pages  How did you summarize  Work?  Potential Energy?  Conservation of Energy? Turn in reading summaries!!! HOMEWORK QUESTIONS:

‘PERSONS, PLACES, AND THINGS HAVE ENERGY, But we observe only the effects of energy when something is happening…’ -Paul G. Hewitt Conceptual Physics pg 103

ENERGY TRANSFERS & TRANSFORMATIONS Example: Chemical Energy in the Battery Becomes Electrical Energy in the Wire When describing energy movement, include: Starting energy form & location Ending energy form & location

ENERGY TRANSFERS & TRANSFORMATIONS THINK: Can you see another energy Transformation in this picture? Describe it to your neighbor. Use the guide above to help you. When describing energy movement, include: Starting energy form & location Ending energy form & location

ENERGY TRANSFERS & TRANSFORMATIONS When describing energy movement, include: Starting energy form & location Ending energy form & location

ENERGY TRANSFERS & TRANSFORMATIONS When describing energy movement, include: Starting energy form & location Ending energy form & location

ENERGY TRANSFERS & TRANSFORMATIONS When describing energy movement, include: Starting energy form & location Ending energy form & location

ENERGY TRANSFERS & TRANSFORMATIONS When describing energy movement, include: Starting energy form & location Ending energy form & location

ENERGY TRANSFERS & TRANSFORMATIONS When describing energy movement, include: Starting energy form & location Ending energy form & location

If a large truck runs into a small car, what force(s) do you think are involved in the collision? If there is more than one force, how do you think the forces compare in size and why? STOP AND THINK

Force ~ A push or a pull Mass ~ the amount of matter in an object Velocity ~ the speed of an object in a direction VOCABULARY

1.Draw a sketch making your prediction about the mass, speed and force of the vehicles involved 2.Explain why you made this prediction (in writing) 3.Share your thoughts with your neighbor HOW MANY FORCES ARE INVOLVED IN A COLLISION AND HOW DO THOSE FORCES COMPARE IN SIZE AND DIRECTION?

Size of Force How does clay indicate if a force is bigger or smaller? Direction of Force How does clay show which direction a force came from? CLAY AS A FORCE METER

EXPERIMENT!!!

What did you see?What did it mean? RESULTS:

 Energy Transfer & Transformation Practice  Complete Reflection Questions (Forces Make a Lovely Pair)  Read Conceptual Physics pages  Introduction – Identifying Action and Reaction  Write a 2-3 sentence summary of each section  Answer Review Questions 1-5 (page 83)  Answer Think and Explain Questions (page 84) HOMEWORK: