Applied Units and Conversions - Decreasing Fuel Consumption and Exhaust Gas Emissions in Transportation - page 297

Appendix A
Applied Units and Conversions

Table A.1 Base units of the International System of Units (SI) (Système International d'Unités)

Description Name Symbol

Length Meter m

Mass Kilogram kg

Time Second s

Electric current Ampere A

Absolute temperature Kelvin K

Amount of a substance Mole Mol

Light intensity Candela Cd

Flat angle Radian R

Rigid angle Steradian Sr

Table A.2 Supplementary units of the International System of Units (SI) (Système International

d'Unités)
Description Name Definition

= s -1 Frequency Hertz 1 Hz

1 N = 1kgms -2 = 10 5 Strength Newton dyn

1 p = 9.807 9 10 -3

Pond N

1 dyn = 10 -5

Dyn N

Conversions

Poundal 1 pdl = 0.138 N

Pound-force 1 lbf = 4.448 N

Ton-force 1 tonf = 9.964 kN

1 Pa = 1 N m -2

Mechanical tension Pascal

1 atm = 1.01325 9 10 5 Pa = 760 Torr = 1.01325
bar = 1.03327 at

Phys.
atmosphere

(continued)