PHYS112-Lecture 2-Connect - PHYS 112 003 Introductory Physics I Lecture 2 INSTRUCTOR MARIE-PIERRE MILETTE Assignment u There is a bonus assignment to

# PHYS112-Lecture 2-Connect - PHYS 112 003 Introductory...

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PHYS 112 - 003 Introductory Physics I Lecture 2 INSTRUCTOR: MARIE-PIERRE MILETTE
Assignment u There is a “bonus” assignment to introduce you to Mastering Physics (extra credit).
Vectors Summary Vector ࠵? : u Arrow’s length indicate the vector’s magnitude A u Arrow’s direction indictae the vector direction ࠵? Vectors can also be represented with their scalar components: u ࠵? = ࠵? & , ࠵? ( x y ࠵? ࠵?
Today’s Outline u Introducing physics u What is physics? u Modeling u Problem solving u Why is this true? u Motion and how to describe it u Motion diagrams u Quantities to describe motion
Today’s Outline u Introducing physics u What is physics? u Modeling u Problem solving u Why is this true? u Motion and how to describe it u Motion diagrams u Quantities to describe motion
What is physics?
Modeling u A model is a simplified representation of an object, a system (group of objects), an interaction or a process. u When creating a model, scientist decides which features to include and which to neglect.
Example of modeling: Simple point-like object Car moving from point A to point B u If looking at distance the car is moving we can model it as a point like object A B x
Example of modeling: Simple point-like object Car moving from point A to point B u Car moving into a parking spot can not be modeled as a point like object
Problem solving Problem solving steps: 1. Sketch and translate 2. Simplify and diagram 3. Represent mathematically 4. Solve and Evaluate
Learning Physics u The most important strategy to help you learn physics is called interrogation
Today’s Outline u Introducing physics u What is physics? u Modeling u Problem solving u Why is this true?

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