Recent content by carbunkulous

Ok, me and my 2 friends have been working on it for about an hour now, and we've came down to the possible solutions: 303 meters or 319 meters can someone tell me which one is right, we have the math already figured out, just don't know which one is right. =/

i've worked it down to sqrt(345/4.9)+Y^2=81 does that make sense?, just solve that then 9-x to get the 2 times?

Homework Statement "an ex-physics student is exploring a cave and he comes to a deep abyss. since he has a stopwatch, he decides to determine how deep the abyss is. He remembers that sound travels at a constant velocity of 345 m/s he drops a rock and times how long it is until he hears it hit...