In article 39,
bz wrote:

32 mm/sec = 115 meters per hour = 1,000,000 meters per year =
1,000 kilometers a year. How close does Tempel 1 get to Mars again?
How much do you think outgassing alters the comet's velocity?

The delta v event is a ONE TIME event, at the moment of collision.
Ring_theory erroniously assumes a continuing delta V.
You show that even if there were a continuning delta V, the effect would
be small.

The delta V was a one time event.

There will be a delta location that continues to grow, but that is NOT a
delta V. And it will be very small.

For that matter the out gassing from coming near the sun has a
much greater influence than this impact ever will. One grain of
sand does not make a beach.