this illustrates space game physics on flying a space ship with firing as well.
File list:
Game Physics
...........\FormPhysics.frm
...........\FormPhysics.frx
...........\frmAdmin.frm
...........\MSSCCPRJ.SCC
...........\Physics.vbp
...........\Physics.vbw
...........\Physics_Demo.exe
...........\Physics_Logic.bas