bullet run speed

Accelerator dropped his body low, then leaped toward Amai Ao with the speed of a bullet.
Though he looked to be in the stronger position, Accelerator was the cornered one. He
couldn’t endure a long fight. He needed to settle things with this one hit, or he’d pass out.
And even though he understood that, he didn’t have the luxury of using a big attack. So
his only option was the simple one—to charge at him at close range.
Amai devoted himself to running away, perhaps because he understood that fact.
Compared to the bullet speed of the jumping Accelerator, if he ran backward, he’d get
caught. So instead, he lurched his body to the side to get out of the way of the incoming
Accelerator. The nails of the devil ripped through where he had just been.

- Toaru Majutsu no Index Volume 5, Chapter 3 Part 15