What are the disadvantages of fast film speed?

I'm almost certain film runs at 24 frames per second.

Well, one disadvantage is the exspense of the ticket. Another is finding a seat and the last for me is waiting for a time or waiting for an intresting movie to come out.

the ASA number indicating the amount light it can manage to still produce an accurate image

It would depend on the conditions. In a crowded room 5 mph. In a rocky pasture 20 mph. On a bumpy dirt road, 60 mph. On a smooth highway 100 mph. On the salt flats, 200 mph.

What kind of bullet are you referring to? They all have different top speeds, and can very a lot. The fastest bullet i know is the .50 cal BMG at about 2800 Feet per sedpnd or 1901 M.P.H