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# Notes : Newtons Laws of Motion Class 9 Notes | EduRev

## Class 9 : Notes : Newtons Laws of Motion Class 9 Notes | EduRev

``` Page 1

Newton’s
Laws of
Motion
I. Law of Inertia
II. F=ma
III. Action-Reaction
Page 2

Newton’s
Laws of
Motion
I. Law of Inertia
II. F=ma
III. Action-Reaction
While most people know
what Newton's laws say,
many people do not know
what they mean (or simply do
not believe what they mean).
Page 3

Newton’s
Laws of
Motion
I. Law of Inertia
II. F=ma
III. Action-Reaction
While most people know
what Newton's laws say,
many people do not know
what they mean (or simply do
not believe what they mean).
Newton’s Laws of Motion
? 1
st
Law – An object at rest will stay at
rest, and an object in motion will stay in
motion at constant velocity, unless acted
upon by an unbalanced force.
? 2
nd
Law – Force equals mass times
acceleration.
? 3
rd
Law – For every action there is an
equal and opposite reaction.
Page 4

Newton’s
Laws of
Motion
I. Law of Inertia
II. F=ma
III. Action-Reaction
While most people know
what Newton's laws say,
many people do not know
what they mean (or simply do
not believe what they mean).
Newton’s Laws of Motion
? 1
st
Law – An object at rest will stay at
rest, and an object in motion will stay in
motion at constant velocity, unless acted
upon by an unbalanced force.
? 2
nd
Law – Force equals mass times
acceleration.
? 3
rd
Law – For every action there is an
equal and opposite reaction.
1
st
Law of Motion
(Law of Inertia)

An object at rest will stay at
rest, and an object in motion
will stay in motion at
constant velocity, unless acted
upon by an unbalanced force.
Page 5

Newton’s
Laws of
Motion
I. Law of Inertia
II. F=ma
III. Action-Reaction
While most people know
what Newton's laws say,
many people do not know
what they mean (or simply do
not believe what they mean).
Newton’s Laws of Motion
? 1
st
Law – An object at rest will stay at
rest, and an object in motion will stay in
motion at constant velocity, unless acted
upon by an unbalanced force.
? 2
nd
Law – Force equals mass times
acceleration.
? 3
rd
Law – For every action there is an
equal and opposite reaction.
1
st
Law of Motion
(Law of Inertia)

An object at rest will stay at
rest, and an object in motion
will stay in motion at
constant velocity, unless acted
upon by an unbalanced force.
1
st
Law
? Inertia is the
tendency of an
object to resist
changes in its
velocity:
whether in
motion or
motionless.
These pumpkins will not move unless acted on
by an unbalanced force.
```
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