This document provides an overview of physics and includes the following topics: - It defines physics as the science of matter, motion, space and time and notes it originated from the Greek word "physis" meaning nature. - It states that Galileo is considered the father of modern physics and that the earliest records of physics come from Iraq around 2000 BC. - It lists the main branches of physics as nuclear physics, astrophysics, biophysics and geophysics and provides brief definitions of each. - It defines a scalar quantity as having only magnitude and a vector quantity as having both magnitude and direction. - It lists five key properties of gravitation: attraction between objects with mass, a force at a distance,

1. PHYSICS ASSIGNMENT HELP
BY

2. TABLE OF CONTENTS
1. WHAT IS PHYSICS ?
2. WHERE DID PHYSICS START ?
3. BRANCHES OF PHYSICS
4. WHAT IS SCALAR AND VECTOR ?
5. WHAT ARE THE PROPERTIES OF GRAVITATION ?
6. CONTACT US
7. THANK YOU

3. WHAT IS PHYSICS ?
1. Physics comes from the Greek word “Physis” which means
“nature”.
2. Physics is the science of matter. It is motion, as well as
space and time.
3. Physics can be thought of as humanity’s attempts to
describe and explain our universe.

4. WHERE DID PHYSICS START ?
● Galileo is the father of modern physics.
● As astronomy is the subfield of physics, we can say that
the earliest records of physics come from modern day Iraq
around 2000 B.C.

5. BRANCHES OF PHYSICS
The branches of physics can be categorized under the
following :
● Nuclear physics
● Astrophysics
● Biophysics
● Geophysics

6. NUCLEAR PHYSICS
Nuclear physics is a branch of atomic physics and this branch
of physics deals with the nucleus of an atom.

7. ASTROPHYSICS
Astrophysics is concerned with the creation and events that
are taking place in this universe. It deals with planets, stars
and asteroids.

8. BIOPHYSICS
Biophysics is related to the living bodies and is concerned with
the action of cells and tissues within a living organism.

9. GEOPHYSICS
Geophysics is the study of physical properties of earth.
Geophysicists understand the origination of earth and focus
on the magnetic field of earth and its influences.

10. WHAT IS SCALAR AND VECTOR ?
A scalar quantity is one that has magnitude only. And a vector
quantity is one which has both, magnitude and direction.

11. WHAT ARE THE PROPERTIES OF GRAVITATION ?
● Every object with mass is attracted by every other object
with mass.
● Gravity is a force at a distance.
● Gravity is a “central force.”
● Gravity varies as the inverse square of the center distance.
● Gravity varies as the product of the masses.

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