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01 Introduction to Physics

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01: Introduction
• Course Code, Credit, Pre-requisite, &
Schedule
• Course Description
• Textbooks, References, & Supplies
• Course Objectives
• Instructor Information
• Grading Policy & Evaluation Procedure
• Classroom Policies
• Topic List or Course Outline
• Attendance
– Max Allowed Absences = Number of hours
per week times three (ex. 3 hours per week
x 3 = 9 max allowed absences)
• Tardiness
– 2 tardiness = 1 absence
• Academic Code of Honor
– Will be given a warning, then be directed to
the guidance office. Don’t do anything that
you’ll be ashamed of in the future.
– No Requirements (calcu, summary of
concepts, pencil etc.) no Exam
• Seating Arrangement
– Alphabetical (This is to facilitate better
monitoring of grades and attendance.)
• Payment for stuff will be used in class
– Photocopies of handouts, exams etc.
handled by the class treasurer
• Pre Lectures
– Answer questions and problems before
coming to class.
– Will be checked randomly. Ticket for the
attendance.
• Physics Mastery Program
– Required to bring all lecture materials
– Schedule and participants will be posted on
the website
• Class Responsibilities
Teaching Philosophy
– Professors are standards and guides.
– If you need any help, don’t hesitate to ASK.
Mind reading is not one of my best talents.
Walk, Run… Dance
How Do I Study Physics?
Preparation and hard work are key to any
successful learning endeavor. But a major
factor not often mentioned is organization.
We will discuss
several tips for
learning physics
principles in the
following slides.
Organization
Gather Materials:
• Textbook
• Loose-leaf Notebook
• Scientific Calculator
• Hole-punch
• Scissors
• Protractor (angles)
• Scotch Tape
• Other Supplies
NOTEBOOK
Purchase a loose-leaf filler
notebook with tabbed sections
such as shown here:
By organizing all problems,
notes, and graded exams, you
are always able to review.
1. HANDOUTS
4. EXAMS
2. NOTES
5. LABS
3. PROBLEMS
6. RESOURCES
Hole
Punch
Timely Learning
Timely learning is efficient learning. It is
better to study an hour each day than to
cram on weekends.
After each lecture, use your
next free period to reinforce
your understanding.
If you wait until the weekend, you must devote
valuable time just rebuilding the information.
Outside the Classroom
Learning is rarely
completed in class.
To reinforce teaching,
you must work problems
on your own as soon
after class as possible.
Try first, seek help if necessary, review examples, work
with others. Working problems is the primary way to
learn.
Complaints of Beginning
Physics Students
• Indi magaling teacher ko.
• Ang kapal ng textbook!
• Indi ako magaling s math.
• Wala akong oras.
• Dami kasing problema sa: bahay, nanay,
tatay, tropa, bf, gf, ff, gff . . .
• Sobra naman yung 5 oras na physics.. Dapat
1 oras lng..o di kaya 30 mins..
It’s Your Responsibility!
As hard as it sounds, the ultimate responsibility
for learning rests with you and no one else.
Seek help if needed. Check out other
books from the library. Review
mathematics. Know when exams are
scheduled. Go to consultation hours.
Take Action; Never let things outside your
control prevent you from achieving goals!
Test Anxiety
How many times have we heard: “I know the
material, but I just can’t perform on tests!”
The major way to deal
with such fears is through
practice and adequate
preparation.
It’s like shooting free-throws when a
basketball game is on the line. You must
practice foul shots until they become
automatic during times of high pressure.
Objectives: 01
• What is Physics?
• The Scientific Method.
• How Should I Study Physics?
Testing the Mars Rover
What is Physics?
Physics is the science that investigates the
fundamental concepts of matter, energy, and
space, and the relationships among them.
Physics is the most basic of
the sciences, underpinning all
other disciplines of science,
medicine, and engineering.
NASA
Physicists are problem solvers,
often meeting new challenges
and developing new theories.
Scientific Method
Underlying all scientific investigation are
the guiding principles of the Scientific
Method.
1. Statement of problem.
2. Observation: data collection.
3. Hypothesis: proposed explanation
4. Experimental testing.
5. Acceptance or rejection of hypothesis.
An Example of the
Scientific Method
Albert Einstein once said: “Example isn't another
way to teach, it is the only way to teach.”
Time t
y
In this example, we observe
a falling object and attempt
to predict the distance it will
fall in a particular time.
The mathematics is largely ignored here in order
to just provide the basic steps in the process.
Statement of Problem
We need to be able to predict the time
to fall for a vertical distance y.
Time t
y
By stating the problem, we
simply verbalize a need to
know or to be able to predict
some event. The problem
might not be solvable.
Observations
To address the problem, we organize the
data and several trial observations.
We measure the time for several
drops at different heights.
y1
t1
y2
t2
y3
t3
Hypothesis
By applying the mathematics and graphing techniques to
the observed data, we note that the time of fall is
proportional to the square of time, t2.
The following equation is
written and the constant k is
determined from the data.
Time t
y
y  kt
2
k  4.9 m/s
2
The hypothesis is now a theory which can be tested.
Experimental Testing
The next step is for us (and for others) to
test the hypothesis: If time t is given in
seconds (s), the distance y in meters (m) is:
y  (4.9 m/s )t
2
2
Each time the distance is predicted
correctly, the theory is reinforced.
In order for a theory to be accepted, it must
be consistent and repeatable by others.
Accept or Reject Hypothesis
Each time the distance is predicted correctly,
the theory is accepted.
It takes only one instance of proven failure
to cause the hypothesis to be rejected!
"No amount of experimentation can
ever prove me right, one single
experiment can prove me wrong."
--- Albert Einstein.
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