Units

 

Metric system

 

The metric system is a subset of the SI units. The units that are relevant to the subject of dynamics are given in the following table.

 

Metric unit	Symbol	What it measures
Meters	m	Distance
Kilogram	kg	Mass
Second	s	Time
Newton	N = kg m/s2	Force
Joule	J = N m	Energy
Watt	W = J/s	Power