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Summary Physical Sciences - Physics (Paper 1) IEB Grade 11 Summaries $5.80   Add to cart

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Summary Physical Sciences - Physics (Paper 1) IEB Grade 11 Summaries

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Physical Sciences Physics (Paper 1) Grade 11 year summary from Mind Action Series book for Curro Schools (IEB). Summarised according to SAGS document. Feel free to leave a review!

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  • November 20, 2022
  • 17
  • 2022/2023
  • Summary
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Chapter 2 Forces :




1 Newton Force when
1kg lm Z
accelerates at
acting
: -


- s




Types of forces


Weight ( Fg) : Grau force .
exerted on
object

Fg =


mg
Force Normal ( Fn) Force surface
exerted
by object in contact
:
on


↳ Acts 90
°
Go surface


Friction Force ( Ff ) : Force that
opposes
the motion



Free
Body Diagrams
Shows all forces acting on
single isolated
body
Adding Forces

Forces SL to tf
acting in .




↳ Use t and -
bo show direction
-




R =
t 10
a.



Forces at 900
acting
↳ Draw add them
rectangle to




rt:* .
.
em A
Fz
:
ago



To Draw this
add Fi and Fz . . .




rectangle .. . Or this
triangle . . .
Or this triangle




::÷÷

, Finding Compo nets Of Forces




Objects On a
Slope

Weight divided into two components :




I .

Perpendicular to the slope (
Fyi) Equal
.
and opposite to normal force


2. Parallel to slope ( Fgz) acts down
slope .
Balanced
by friction




F-Down =

Toy Fy
-




Laws of Friction





Ffs motion when object
opposes is
stationary .




Fff
"
""
Ffs force when
equal obj s barbs Go
µ Fu

is to =

app . . move .



,





Ffk
opposes motion when object is
moving and equals bo
app .
force Ffk =
µkFN

, Chapter 3 Force :
and Motion M


Newton 's First Law
Object continues in a state of rest or constant
velocity
unless acted resultant force
upon by net or .




Inertia
Properly
its state
of
of
a
body
rest or
that causes


uniform motion
it to

.
resist
change in




Newton 's Second Law
When net force is
applied to object of mass ,
m
,
the

object accelerates in direction of net force .
Acceleration ,




proportional net force
a, is
directly to
,
and
inversely proportional
to mass .




Fnet -
-
ma

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