Re: Physics Question
It looks like algebra to me. We know that x (the distance) divided by t1 (the time it takes to travel through the concrete) is 3000. We know that x divided by t2 (the time it takes to travel through the air) is 343. We know that t1 is .75 seconds less than t2.
x/3000 = t1
x/343 = t2
t1 = t2-.75
x/3000 = (x/343)-.75
I'm solving this in a few different ways, but none of them are very elegant. I'm sure there's a simple trick I'm missing to make the algebra clean, but the answer is pretty consistent. I'm pretty sure it's x=(343*3000*.75)/(3000-343) or 771750/2657 or ~290.46.
(It looks like kerowo has a cleaner solution, maybe that's a better approach?)
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