Note that the SysML profile includes standard SI Definition Quality Kinds that you can use, such as Energy, Force and Mass - the SI Definition Quality Kinds are provided in sub-Packages of the SI Definitions package.
To create a quantity kind:
1. Right-click the Model or Package in which you want to create the Quantity Kind, point to New, point to SysML, point to Structure, and then click Quantity Kind.
2. Type the required name of the Quantity Kind, and then press the Enter key.
Alternatively, you can create a Quantity Kind on a Block Definition Diagram.
How?
A Quantity Kind can be used by Units and Value Types.