I was watching a SciFi tv show where large objects had an outer speed limit of 18000 kph and that got me wondering what things in everyday life are faster than even 500 kph.
I know bullets can be fast, but they are not exactly everyday life (at least in my life).
I included mass for obvious relativistic reasons.
Not exactly the answer to your question, but cockroaches are pretty fast, considering their size. If they were as big as humans, they could run with speeds over 300kmph.
More info here.
Sorry for being pedantic, but if they were as big as humans, they couldn’t run that fast.
Also, they’d suffocate.