This document discusses forces and motion. It defines physics and explains that all matter in the universe is made up of force and motion. It then summarizes Isaac Newton's three laws of motion, including inertia, acceleration proportional to net force and mass, and equal and opposite reaction. It also describes several types of forces like friction, air resistance, tension, spring force, and magnetism. Finally, it distinguishes between kinetic and potential energy.

1. Forces in Motion
Nova A. Corciega

2. Physics
• Physics is a branch of science concerned
with the composition of matter and the
relations of the universe's fundamental
constituents. Physics (from the Greek
physikos) is concerned with all dimensions
of nature on both the macroscopic and
submicroscopic levels through its broadest
sense.

4. FORCE AND MOTION
• All matter in the universe is made up of
force and motion. Any force that can push
or pull on an object is referred to as a
force. Forces have an effect on objects that
are at rest or in motion. Inertia, mass,
velocity, and momentum are all part of
Isaac Newton's three laws of motion.

6. Newton's First Law: Inertia

7. Newton's First Law: Inertia

8. Newton's First Law: Inertia
• If a body is at rest or traveling at a constant
speed in a straight line, it can stay at rest or keep
moving in a straight line at constant speed unless
it is acted upon by a force, according to the
postulate in physics.

9. Newton's Second Law:
Acceleration

10. Newton's Second Law:
Acceleration
• An object's acceleration is proportional to its net
force and inversely proportional to its mass. An
object's acceleration is determined by two
factors: force and mass. Mass is the amount of
matter in an object.
Force = Mass x Acceleration

11. Newton's Third Law: Action &
Reaction

12. Newton's Third Law: Action &
Reaction
•For every action, there is an equal and
opposite reaction. The statement
implies that there are two forces
acting on the two interacting objects
in any interaction.

16. Friction Force
• The force exerted by a surface as an object
moves across it or makes an attempt to
move across it is known as the friction
force. Sliding and static friction are two
different forms of friction forces.

19. • Sliding friction — (also known as kinetic
friction) is a contact force that prevents
two objects or an object and a surface
from sliding together.

20. • Rolling friction — When an object rolls over a surface,
rolling friction occurs. It will slow down a moving object,
but not as much as sliding force does.

21. • Fluid friction — it is the force that opposes
motion within the fluid or between the
fluid and another medium passing through
it. Internal friction occurs as a result of
interactions between fluid molecules, and
external friction occurs as a result of how a
fluid interacts with other matter.

22. Air Resistance Force
• Air resistance is a form of frictional force that
objects experience when they move through the
air. The force of air resistance is often observed
to oppose an object's motion. Because of its
small size, this power is often overlooked (and
due to the fact that it is mathematically difficult
to predict its value).

23. Tension Force
• When forces acting from opposite ends
pull a string, rope, cable, or wire close, the
tension force is transmitted through the
string, rope, cable, or wire. The tension
force is guided along the wire's length and
pulls equally on the objects at the wire's
opposite ends.
•

24. Spring Force
• The force exerted by a compressed or
stretched spring on any material attached
to it is known as the spring force. A force
often acts on an object that compresses or
stretches a spring, restoring the object to
its rest or equilibrium state.

25. Magnetism

26. Magnetism
•The force exerted by magnets as they
attract or repel each other is known
as magnetism. The movement of
electric charges causes magnetism.
The poles of all magnets are north
and south.

27. ENERGY
•Energy comes in a variety of
forms. There are two types of energy:
kinetic and potential. Kinetic energy is
the energy associated with motion.
Potential energy is the energy
associated with a given location.
Potential energy isn't the same as
"stored energy".

30. Historical notes
• Aristotle of Stagira (384–322 BCE) was a Greek philosopher
who lived from 384 to 322. The Nicomachean Ethics contains
the first use of the term energeia (εvεργεια). Its modern
interpretation differs greatly from Aristotle's original
definition. The term "action" or "being at work" in Aristotle's
context is sometimes translated as "activity" or "being at
work." Energeia is derived from the Greek words en+ergon
(εν+εργο), which means "in work" or "to include work."
•