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2.-Kinematics

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Scalar
Quantities
Quantities
Example
:
that
mass
have
time
.
,
magnitude only
temperature current
,
voltage energy
,
distance
Vector Quantities
Quantities that
Example
work
,
A numerical
is
for representation of
scalar
quantity
a
,
.
speed
,
value
enough
,
power
,
→
magnitude and direction
velocity displacement acceleration force
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Physics
by Kashan Rashid
of force
gravitational
field strength moment
:
both
have
,
,
,
,
,
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A vector
I
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quantity
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4N
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value
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-
reference of force !
the
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speed
displacement
velocity
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z
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s
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Unit
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:
3
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quantity
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time
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Physics
by Kashan Rashid
of velocity
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velocity
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t
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t time taken
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change
acceleration
final velocity
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velocity
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t
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deceleration retardation
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Graphs of
kinematics
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dlm
-
time
Speed
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graphs
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m=D_y=?d_
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distance
quantity
speed
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Physics by Kashan Rashid
graph meaningless
y-axis
speed
:
acceleration
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the
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speed
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2.
0
rest
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speed
lahead
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0
0
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power
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by Kashan Rashid
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from
towards
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speed
object momentarily stops
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tls
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speed )
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speed ) by Kashan Rashid
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Physics by Kashan Rashid
speed
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time
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Object
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Physics by Kashan Rashid
0
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2.
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°
0
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8m15
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0
4s
5.
Object
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-
-
0
increasing
4s
decreasing
acceleration
acceleration
CLASSMATE
Physics by Kashan
Rashid
constant
grad acc decreasing
grad ace increasing
constant
deceleration
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at
6.
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at
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vertical
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-2
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decreasing
at
deceleration
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deceleration
grad
8.
increasing
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hemp
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grad
increasing
→
-3
9ms
→
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5m15
15m15
→
-5
:
all
10m15
-
-
→
-4
-
Physics by Kashan Rashid
decreasing
6m15
→
-3
3m/s
→
-2
1- m/s
increasing
i.
2.
4
3
4
"
6
1
grad
constant
speed
constant
acceleration
deceleration
3.
5
constant
.
5
.
decreasing
deceleration
constant
deceleration
6.
=
acceleration
acceleration
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Physics by Kashan Rashid
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