> Actually in basic ballistics the energy of the
> bullet is largely spent when it reaches the
> trajectory azimuth (air losses). After this
> point the trajectory is mainly downward. ;o)

True.  I was trying to make a point that you can't speed up or slow down
the earth by throwing things around that don't leave the system.  In this
case, the rotation force gets back to the earth from the air friction of
the incremental air motion caused by the bullet.  The bullets momemtum
that didn't go into causing forward air motion get returned to the earth
when it is stopped by hitting the ground.


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