a twirlers baton is .76 m long and spins around its center. The end of the baton has a centripetal acceleration of 47.8 m/s^2

the duration of a photographic flash is related to an rc time constant, which is 0.100 μs for a certain camera.

this would be about 43%

earth's neighboring galaxy, the andromeda galaxy, is a distance of 2.54×107 light-years from earth. if the lifetime of a human is taken to be 70.0 years, a spaceship would need to achieve some minimum speed min to deliver a living human being to this galaxy.