A physicist studies physics and uses the scientific method, which involves identifying a problem, formulating a hypothesis, testing it, analyzing results, and drawing conclusions. Physics contributes breakthroughs by making hypothetical ideas realities through relationships between quantities. There are three main relationships: direct, where quantities change proportionally and graphs are linear; inverse, where quantities change inversely proportionally and their product is constant; and direct square, where one quantity is proportional to the square of the other and graphs are quadratic curves.

1. The World of PHYSICS…
What is a Physicist?
- is the one that studies physics. A
physicist should also be
“B-O-R-I-N-G…?!”; an acronym which
means…
B – elieves in a Cause-And-Effect
Relationship
O – pen-minded
R – espects the ideas of others
I – maginative

2. The World of PHYSICS…
Physics has been the best contributor
of breakthroughs in science. In fact, it
made into realities the hypothetical
imaginations of the past.
All of these were through due to the
methodology used by physicists and
discoverers… and this method is…
SCIENTIFIC METHOD.
Scientific method is a systematic way of
solving problems.

3. The World of PHYSICS…
*Steps in Scientific Method includes
the following:
1. Identifying the PROBLEM.
2. Formulating HYPOTHESIS.
3. TESTING the hypothesis.
4. Analyzing and verifying
RESULTS.
5. Formulate CONCLUSIONS and

4. The World of PHYSICS…
In physics, we will be concerned with
how quantities changes as other
quantities varied. These are quantity
relationships which are mathematical
and formulate equations using basic
concepts on variations.
These relationship variations are as
follows:
1. Direct Relationship
2. Inverse Relationship <Next

5. The World of PHYSICS…
Direct Relationship Variation.
Two variables x & y are directly
proportional to each other if their ratio is
constant. In mathematical formula,
y = kx
where k is the constant of variation. If x
is doubled, the value of y is also
doubled.
The graph of a direct relationship is a.

6. The World of PHYSICS…
This is an example of Direct
Relationship Variation.
Graph of Force VS. Elongation
Elongation (x) in
centimeters (cm)
8.08.0
6.06.0
4.04.0
2.02.0
00 1.1. 00 2.2. 00
Force(F)in
Newton(N)
<Bac

7. The World of PHYSICS…
Inverse Relationship Variation.
A variable y is inversely proportional to x
if the product of x and y is a constant.
Mathematically expressed as…
xy = k
As the value of x increases, the value of
y decreases proportionately so that their
product is a constant. For example,
doubling the value of x; cuts the value of

8. The World of PHYSICS…
This is an example of an Inverse
Relationship Variation.
Graph of Force VS. Elongation
Mass (m) in kilograms
1010
55
00 1.1. 00 2.2. 00
Acceleration(a)in
m/s2
<Bac
AccelerationAcceleration
(m/s(m/s22
))
10.010.0 5.05.0
Mass (kg)Mass (kg) 1.01.0 2.02.0

9. The World of PHYSICS…
Direct Square Relationship Variation.
A variable y is directly proportional to
the square of x if the ratio of y the
square of x is constant. Mathematically
expressed as…
y = k x2
where k is the constant of variation. If
you double the value of x, the value of y
will be quadrupled. The graph of this

10. The World of PHYSICS…
This is an example of Direct
Square Relationship Variation.
x
2
y
<Bac