Summary
Summary Graphs of motion
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- Institution
Summary of IEB Physical Sciences Graphs of Motion section.
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GRAPHS OF MOTIONposition / time velocity / time acceleration / time
✗ It ✓ It a /t
Inclined Horizontal
,É É
Horizontal
✗ straight
f
straight line
%
on zero
" " line a
:* .
. .
t t
t
9=0
gradient velocity gradient acceleration
-_ ◦ __ •
◦
= 0
•
NB= state ref frame ! !
.
◦ area -_
displacement
( incl signs) .
will have
=
◦
LD4E graph distance
the same shape ,
but Lexa .
signs)
star t at
[ 0;o)
x
:É
o '
/ 2 parabola V Inclined
a
Horizontal
÷
::::÷
straight straight
t line o line
o t t
\r
"
¥
v -
slower
. •
gradient __
acceleration •
area =
change in
velocity
=
v -
a
=
instantaneous velocity ◦
area = Ox ( incl .
signs)
(at time where tangent
touches
graph ) distance (excl signs)
=
ref ref frame direction __ position
f) frame direction gradient Lifebelt :
.
-_
.
at star t
at star t
faster same direction
µ
→ a
=
✓ =
gradient
a =
gradient asmotion
§
=
✗ z -3C ,
= slower >
opposite
tz a
-
=
-
t ,
=
direction to
. . . .
= .. . . .
☐a = a re a motion
. = Ibt ' / zbh + . . . . ( eg)
SKETCH GRAPHS
steps :
WRITE DOWN FRAME ! ! ! * /E draw basic diagram
•
REF . × -
>
with number line
↳ either use - > same as given graph
→ what examiner requires
* If given letters / include ! !
→
your ow n times →
Cx -
a x i s)
↳ for position / time -
INCLUDE ORIGIN OF REF FRAME ( ref.pt )
◦
Determine BASIC SHAPE
↳
determined constant ?
by - > v or a
→
type of graph?
Determine placement
◦
look at value at star t
g-
-
↳ ✗ It where object is (number line W / ref frame)
-
.
↳ v1 t -
how fast object is moving ( direction = sign = +
/ -
)
↳ alt of
-
acceleration -
'
gradient ✓ It graph
lifebelt
Other
graphs ( not often asked , harder ) :
DX It same shape It
'
as
-
✗
-
star ts at co ;o ]
•
distance It -
similar shape to 3C It
-
gradient cannot be negative
•
speed It -
similar shape to V It
-
only positive y-axis
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