Newton's three laws of motion describe the relationship between the forces acting on a body and its motion due to those forces. The first law states that an object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force. The second law states that the acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force. The third law states that for every action, there is an equal and opposite reaction.

1. Submitted by,
Anitha.K.P
Physical Science
B N V C T E
NEWTONS’S LAWS OF
MOTION

2. Sir.Isaac Newton
(1642-1727)

3. Newton's laws of motion consist of
three physical laws that form the basis
for classical mechanics. They describe the
relationship between the forces acting on a
body and its motion due to those forces.
The three laws of motion were first compiled
by Sir Isaac Newton in his work ”Philosophiæ
Naturalis Principia Mathematica”, first
published on July 5, 1687. Newton used them
to explain and investigate the motion of many
physical objects and systems

4. Newton's
First and
Second laws,
in Latin,
from the
original
1687 edition
of
the Principia
Mathematica
.

6. Every body remains in a state of rest or
uniform motion (constant velocity)
unless it is acted upon by an external
unbalanced force.
This means that in the absence of a
non-zero net force, the center of
mass of a body either remains at rest,
or moves at a constant speed in a
straight line.
This tendency is also known as inertia

7. INERTIA
The ball doesn't move
unless it is acted upon by
an external unbalanced
force
Inertia is the
tendency of
an object to
resist
changes

10. Momentum of a body is defined as the product of its mass and
velocity
P(momentum) = M(mass) x V(velocity)

11. Secondlawofmotion
 The rate of change of momentum of an object is
proportional to the applied unbalanced force in the
direction of the force

12. When mass is in kilograms and acceleration
is in m/s² , the unit of force is in Newton (N).
One Newton is equal to the force required to
accelerate one kilogram of mass at one
meter/second square

13. We know that objects
with different masses
accelerate to the
ground at the same
rate.
However, because of
the 2nd Law we know
that they don’t hit the
ground with the same
force.
F = ma
98 N = 10 kg x 9.8
m/s/s
F = ma
9.8 N = 1 kg x 9.8
m/s/s

14. Newton’s
3rd law of
motion

15. For every action, there is an equal and opposite
reaction.
This may be the most popular law in the universe !
This law is sometimes referred to as the action-
reaction law, with F called the "action" and −F the
"reaction". The action and the reaction are
simultaneous.

16. According to Newton,
whenever objects A
and B interact with
each other, they
exert forces upon
each other. When you
sit in your chair, your
body exerts a
downward force on
the chair and the
chair exerts an
upward force on your
body.

17. •SCERT science text book of 8th class
•Wikipedia