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PHYSICS 103

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PHYSICS 103

LECTURE 1: 8/26/2003

Agenda for Today:

- Review of syllabus
- Overview of course material
- Basic math review
- Units and unit conversions

How to do well in this class:

- Attend the lectures and ask questions
- Read the book before coming to class
- Study the material after each class
- Complete sample exercises, questions, and problems in chapters.
- Do the assigned homework
- Take the self-tests in class I give before each exam
- Don’t cram
- Work in groups
- Come to office hours or get a tutor if you are having trouble

- Algebra

Solving for an unknown

The quadratic formula

- Basic Geometry and trigonometry

Triangles

Trigonometric functions

Solving for an Unknown

Solve for x:

The Quadratic Equation

a, b, and c are constants (numbers)

Solution:

c

b

90°

a

Triangles

- Sum of all angles in a triangle is 180°
- Pythagorean theorem

For any right triangle:

c

b

90°

a

Trigonometric Functions

Units and Unit Conversions

SI Units

- Length will be measured in meters (m)
- Mass will be measured in kilograms (kg)
- Time will be measured in seconds (s)

Useful Conversion Factors

- 1 inch = 2.54 cm
- 1 m = 3.28 ft
- 1 mile = 5280 ft
- 1 mile = 1.61 km

Practice Unit Conversions:

- How many seconds is an average lifetime? How many days?

- How many seconds are you asleep? How many days?

- If you go 60 miles hour, how many feet per second? How many meters per second?

HW Assignment:

- Review Syllabus
- Read Chapter 1