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Class notes

IEB Physical Sciences: Newtons Laws

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Provides all definitions with in the Newtons Laws section of the IEB Physical Sciences syllabus, along with comprehensive notes and worked examples

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  • November 8, 2024
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  • 2024/2025
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, Newtons Laws
Definitions


weight The gravitational force earth exerts
any object or its surface
: on on near




Normal perpendicular exerted object in contact with it
Force : The force
by a surface on an




Friction : The force that opposes the motion of an object



Inertia : The property of an object that causes it to resist a change in its state of rest or

uniform motion



1st Law : An object continues in state of rest uniform velocity unless acted
a or
upon by
a not or resultant force




2nd law : When a net force is applied to an object of mass
,
it accelerates in the direction of
the net force , The acceleration is proportional to the net
directly force and
inversely
Proportional to the mass




3rd law : When object A exerts object Object B simultaneously exerts
a force on B
,
an
oppositely
directed force of Object A
magnitude on




Important Formula's

Fg my
=




Fret = Ma



FesMAX =
NSFN

Fr MAX =
NkFN



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