Unit Systems
FUNDAMENTAL DIMENSIONS
Rev. 0
Page 7
CP-01
Density
Density is a measure of the mass of an object per unit volume; thus, it has units of
mass divided by length cubed such as kilograms per cubic meter (kg/m ) or pounds
3
per cubic foot (lbs/ft ).
3
15 lbs/5 ft = 3 lbs/ft
3
3
Velocity
Velocity is the change in length per unit time; thus, it has units such as kilometers per
hour (km/h) or feet per second (ft/s).
Acceleration
Acceleration is a measure of the change in velocity or velocity per unit time; thus, it
has units such as centimeters per second per second (cm/s ) or feet per second per
2
second (ft/s ).
2
