, kinetic potential, but there's a little gap. what's the gap in potential energy? where's that energy going, huh? heat. it's going to heat. it's gonna warm up the table, warm up that ball. so you never can get a ball that will bounce as high. almost, but not quite. here's a little device that's kind of nice. it's a portion of a rocket ball and i can invert it. when i do that, am i giving it a little energy? i'm gonna drop this and watch. did you see that? it bounced hher than when i dropped it. hc? and here's another question, too. will it always bounce higher from where i drop it? if i got higher up, would it still bounce higher? where is the point where it will not bounce higher anymore and why? think about that. good physics, yeah? i'll show you another idea with energy. here's a super ball. the super ball, i'm gonna let it go-- some people think a super ball will come up to the same height, but it won't. it comes up to about a little bit more than half height, okay? this super ball is guaranteed to give a thousand bounces. we got this this morning. troy's been