3 ms·
It doesn't make a difference in the solution if Point A is fixed or moving. The band is getting longer, and the and is standing on it - moving with it either w
by cookingrobot 13y ago
It doesn't make a difference in the solution if Point A is fixed or moving. The band is getting longer, and the and is standing on it - moving with it either way.
- qwerty_asdf 13y agoIt does matter, because if you tack Point A down to a fixed position, and pull Point B away at a fixed speed, and the ant's speed is explicitly measured as relative to it's distance from A, then ant isn't catching a ride on the rubber band. In that case, the ant is only moving at a fixed speed, toward the other end (100,000 times slower than the end's expansion), which will forever be too far away.
- thedufer 13y agoThe ant's speed is not explicitly measured relative to its distance from A. It is left unspecified what it is relative to, but the implication of "walking speed" (well, crawling speed, I guess) is that it is relative to the point of ground you are on.