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Physi
cs
2
AQA

Page 2

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Physics 2 AQA

Topic 1: Motion
Distancetime graphs:
C al
culat
ing
speed :

o Ifa
n obj
ecti
s moving ata
const
ants
p eed,w
e can
cal
culat
e
the
speed
by usi
ng:

Physi
cs
2
AQA

Page 3

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S peed (
m/s) =

















Sl
op e
represent
s t
h e
speed
Thes
teeper t
hes lopeo
f t
hel
ineo
nad
i
stanceti
meg
r
aph,
t
heg
r
eat
er
the
speed.

The sl
ope of
t
he
li
ne =

o T hi
s shows…

Page 4

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o The
acceler
ati
on
o f
an
object
i
s t
he
change
in
vel
oci
ty
per
second.

o Accel
erat
ion
has
the uni
t'
s m/
s².
o Accel
erat
ion
(m/s²
)
=





































Using graphs:
T oc
al
cul
atet
hed
i
stancet
r
avel…

Page 5

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Dist
ance
= 20
x 5
= 100/
2 =
50m
Braki
ng
­ r
educes
veloci
ty






























Topic 2: Speeding Up and Slowing Down
Forces between objects:
F orce:
o F orcei
sap
u sho
r
pu l
l
. Wec
anme
asur
et
hef
or
ceu
si
ngaN…

Page 6

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o F or
ce i
s measured
in
N ewtons
(N).

For
ces
between obj
ects:

o Wh en2i
ces
katersp
usho
ne acho
t her,
theya
p pl
ya
ne
qual
b ut

opposi
te
for
ce on
one anot
h er
.
This
w oul
d cause
them…

Page 7

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singl
ef orcet
hat wi
ll
havet
hes
a meo
v er
all
ef
fect
.
Th i
ss
inglef
or
cei
s
call
ed
the resul
tant
f
o r
ce.
Obj
ect at
t
he
star
t: R esul
tant
for
ce: Eff
ect
on
the
ob j…

Page 8

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o Wh ent
her
ei

sar esult
ant
forcea
cti
ngo
na no bject
,
thent
heo
bj
ect
wil
l
accel
erat
e i
n t
he
part
icul
ar
direct
ion.

o T he si
ze
of
the r
esult
ant
force
dep ends
in
the:

Ma ss…

Page 9

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Braki
ng di
stance:
o T hef
orcer
eq ui
redt
os
to pa
no bject
dep endso
nt hev
eloci
tya
n dt
he
ma ss of
t
h e
object
.
o T heg
reater
thev
el
ocit
yo
r t
hema
s so
f ano
b j…

Page 10

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Falling objects:
Ma ss and weight:

o T hema
s so
f anyo
bject
istheme
a su r
eo
f
thema
t er
ial
(matt
e r
)
int
he
ob j
ect.

o T he w ei
g hti
s the force acti
ng on an obj
ectd
u…

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