Table 2: Physical Quantities and Their Units
Physical Quantity
symbol
Length, distance
L, d
SI measurement units
symbol
unit dimensions
meter
m
length
kg
mass
s
time
Mass
m
kilogram
Time
t
second
Area
A
square meter
m2
length x length
volume
V
cubic meter
m3
length × length × length
Density
ρ
kilogram per cubic meter
kg/m3
mass
volume
Force
F
newton
N( kg.m/s2)
momentum
time
Frequency
f
hertz
Hz ( s-1)
1
time
Speed,velocity
→
meter per second, meter
m/s, m/s [N,S,W or
length length
,
,[dir]
time
time
v, v
per second with a
E]
direction
acceleration
a
meter per second squared,
direction
momentum
p
kilogram meter per
m/s2
[N S E or W]
kg m/s[N,S,W or
second
E]
Liquid volume
V
Liter
L
Work, Energy
W
joule
J( kg.m2/s2)
pressure
P
Pascal or Newtons per
square meter
Pa, N/m2
! length $
#
&
" time %
,[dir]
time
mass × length
,[dir]
time
volume
1000
force ×distance
Force
area