How to hit a baseball travelling at the speed of light
It seems obvious that you can’t do this. XKCD does the math (or physics) to demonstrate that not only is it impossible, it’s also fatal for pitcher, batter, and probably the entire city…
“After about 70 nanoseconds the ball arrives at home plate. The batter hasn’t even seen the pitcher let go of the ball, since the light carrying that information arrives at about the same time the ball does. Collisions with the air have eaten the ball away almost completely, and it is now a bullet-shaped cloud of expanding plasma (mainly carbon, oxygen, hydrogen, and nitrogen) ramming into the air and triggering more fusion as it goes. The shell of x-rays hits the batter first, and a handful of nanoseconds later the debris cloud hits.”
It’s not all bad news though. The batter gets on base.
A careful reading of official Major League Baseball Rule 6.08(b) suggests that in this situation, the batter would be considered “hit by pitch”, and would be eligible to advance to first base.
I love this stuff. The XKCD “What If” blog is tackling similar questions on a weekly basis. Like trying to figure out how much power Yoda could generate via the Force.