Topical Notes by Chapter for
Cambridge IGCSE
Physics (0625)
1st edition, for examination until 2025
© r/IGCSE Resources 2024
Chapter 1 : Motion, Forces And Energy
*motion
physical quantities and
techniques
measurement
Rulers and measuring cylinders are for
length and
Falling object W/O air resistance
unit time
volume
Velocity is speed in a given direction
measuring a variety of time intervals using clocks
Average speed
and
timer
digital
Average Value
of
sum
:
all values
per unit time
number of values
SCALAR
quantities that
·
only
magnitude
have
Eg
:
,
,
,
,
Velocity
~
both its speed and the direction
Eg force weight acceleration
:
,
,
,
.
and gravitational field strength
necessary to mention
,
the resultant force of two vectors at right angles
graphically draw
N
find angle
using
N
,
4 resultant
>
5 M/52
forces
>
50 N
~=
on
graph
draw resultant
52 + 52
SOH CAH TOA
,
T
Pythagoras
5m/s2
time
acceleration
:
.
A
deceleration is negative acceleration
and use this in calculations
Acceleration of free fall g for
object near to the surface of
the earth is approximately constant
an
and is approx constant and is
9 8 m/52
.
for force and use a
weight
density
Density is
p
weight is the effect of a gravitational field
Weight
W
=
Mass
x
MG
. 9 Wm
=
=
Gravitational field
mass
fall
:
This is
a
density in solids.
Regular solid
irregular solid
*
W
g
strength
is force per unit
equivalent to acceleration of free
.
Weights
density
V-volume
How to determine
.
Gravitational field strength
M=
=
·
measure length , width ,
place object into a measuring
·
height 3 multiply to find
Cup till it is submerged in
volgume
water, the increase in water
.
Place object on balance
.
to find its mass
volume is the volume.
·
(and mass) can be compared
.
balance
using
volume
m = mass
.
-
mass per unit
= Where
p
.
strength on mass
.
,
:
mass
Itenoughtobalancedownwardright
protracter for angle
object at rest relative to the observer.
Weight a gravitational force on an object that
has
,
Vector , measure length
of the quantity of matter in an
a measure
as air resistance increases
=
S
Mass
initially the upward air resistance isn't high
meaning there is unbalanced forces
speed-gradient of distance-time
&
mass and
accelerating
.
momentum electric field strength
Calculation
.
-
gradient of speed-time of object forces are balanced
* distance travelled= area under the the
object now falls at constant
called Terminal Velocity
speed
.
speed-time graph
·
is also vector because it is
>
speed of falling object
decelerating
e
speed
↳
rest
,
The force of air resistance increases with
n
line=
gravitational field objects
.
experience weight and friction
increasing
constan
decrease
·
quantities that have both magnitude and direction
·
=A
Falling object with air resistance
In uniform
velocity
speed.
time
VECTORS
.
·
higher
af
distance is also scalar as it has no direction
Speed time mass energy and temperature
·
steeper
rate
total time taken
speed
.
·
↑
a
object falls with same acceleration,
speed of falling object increases at a steady
total distance travelled
=
Acceleration is change in
Period of oscillation- time taken/number of swings
·
&
speed is distance travelled per
*
p
=
Place object on a balance
·
M
to find mass
·
p
=
m
Which object floats ?
any object
with a density lower than that of liquid
.
will float above the liquid
If liquid doesn't mix, does it float ?
lower density liquids float on denser liquids if not mixed
-
.
Chapter 1 : Motion, Forces And Energy
Chapter 1 : Motion, Forces And Energy
useful
energy
out
total
energy
in
wasted energy wasted energy
Chapter 2 : Thermal Physics
Chapter 2 : Thermal Physics
Chapter 3 : Waves
Chapter 3 : Waves
Chapter 3 : Waves
Chapter 4 : Electricity & Magnetism
Chapter 4 : Electricity & Magnetism
Chapter 4 : Electricity & Magnetism
Chapter 4 : Electricity & Magnetism
Chapter 5 : Nuclear Physics
Chapter 5 : Nuclear Physics
Chapter 6 : Space Physics
Chapter 6 : Space Physics