What would the end velocity be if...?

Someone is placed in a capsule of an electro-magnetic repulsion
accelerator in the weightless vacuum of space and accelerated along
its entire length.  If the g force the person feels is 2g (32 ft/s-
squared x 2) during the entire time along the accelerator and the
accelerator is 60,000 miles long, how fast would the person be
traveling when they leave the accelerator and how long would their run
on the accelerator last?  And if a machine part was fired off on the
same accelerator at 100g, why do I get the feeling that they be going
a lot faster than 50 times as fast the 2g-accelerated human and their
run taking a lot less than 1/50th the time?  Or is my gut wrong and
they would only be going 50 times faster and their run would only be
1/50th the time?

If I understand g forces in the weightless of space, the person/object
has to at a constant rate of acceleration to so experience the desired
g force.  The moment their velocity remains the same, they return to
their weightless existence.  Thus when the person/machine-part finally
leaves the 60,000-mile long accelerator, they will return to a
weightless existence.

Thanks in advance!

Scott