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Page 1

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Speed/Velocity, Distance/Displacement & Acceleration




Q Symb Unit Unit
u ol symbol
a
n
t
i
t
y
o
r
V
a
r
i
a
b
l
e


S s Metres per second m/s
p
e
e
d


D d Metres m
i
s
t
a
n

Page 2

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c
e


T t Seconds s
i
m
e


V v Metres per second m/s
e
l
o
c
i
t
y


D s Metres m
i
s
p
l
a
c
e
m
e
n
t


A a Metres per second m/s2
c squared
c
e
l
e
r…

Page 3

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t
i
o
n


New
ton's
Laws
(for
infor
mati
on)

1 An
object
in
motion
tends
to stay
in
motion
or a
stationa
ry
object
stay
stationa
ry
UNLESS
ACTED
ON BY
AN
EXTERN
AL
FORCE

Page 4

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2 The
force on
an
object
is
proporti
onal to
the
acceler
ation it
causes.
A larger
mass of
object
needs
a larger
force to
move it
with
the
same
acceler
ation.


3 Every
action
has an
equal
and
opposi
te
reacti
on

Page 5

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Work Done is Energy Used (Joules)




Alpha Radiation




Beta Radiation




Gamma Radiation

Page 6

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The Effects of Radiation




Radiation in the Atmosphere




Rutherford Scattering



Inside The Atom




Alpha Decay

Page 7

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Beta Decay



Gamma Decay




Half Life

The time it takes the number of radioactive nuclei in a sample to decrease by 50%
Or... The time it takes the count rate from a radioisotope to decrease by 50%



Carbon Dating

All living things take in a little radioactive carbon-14 in photosynthesis,…

Page 8

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Static Electricity
When you rub an insulator with a cloth, two things can happen:
A. Electrons move from the cloth to the insulator: cloth becomes +ve, insulator becomes -ve
B. Electrons move from the insulator to the cloth: cloth becomes -ve, insulator becomes +ve

It is only the electrons that…

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