I am a genious

Ask me questions, and I will answer them.  Because I am a genuis, the answers will be very good.

Awesome, most textbooks don't bother to say why U-235 nuclei is gooder at splitting when hit by slower particles than when it is hit by faster particles.  I looked it up and read something but I can't recall now.  Please remind me why being hit by a slower particle would be more destructive.