Don't think so. Newton's First Law: An object at rest
tends to remain at rest. An object in motion tends to
remain in motion.
Thus, a Tachyon decelerated to .99C should continue to
move at .99C until and unless some force acted on it to
accelerate back to it's C+ speed. Thus, the tachyon,
being a dumb particle, can't impart acceleration to itself.
It'll continue moving in a
straight path at C- until it hits something. It will then
perform an inelastic collision and travel off at some
angle at C- - v, where v is the speed it lost due to the
collision.
I would expect it to inflict damage by transferring
kinetic energy to the target, at a rate of 1/2MV**2.
Also: Somebody said WC doesn't have physics. Not so; it
has a certain fictional physics which makes it more
interesting to nerds like me. It's part of the reason why
I like WC more than certain other universes because WC at
least *tries* to provide a decent physical explanation for
what happens, as opposed to, say, SW which simply handwaves
away things like what a turbolaser is, how things travel
FTL, and how you can blow up a small moon in low orbit
around a planet and not have the debris render the planet
uninhabitable.
Respectfully,
Brian P.
