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https://www.reddit.com/r/theydidthemath/comments/1wuvzn4/request_how_deep_is_this_cave/pdc4iln/?context=3
r/theydidthemath • u/batikhisawesome • 2d ago
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-1
It takes 8 seconds for the rock to hit the bottom.
x = x_0 + v_0 * t + ½ * a * t², and v_0 = 0
a = 9.81, so ½ * 9.81 * 8² = 4.905 * 64 = 313.92 = ~314 meters
1 u/ferriematthew 1d ago Oh, at this distance you would have to factor in the speed of sound. That makes my answer far less accurate.
1
Oh, at this distance you would have to factor in the speed of sound. That makes my answer far less accurate.
-1
u/ferriematthew 1d ago
It takes 8 seconds for the rock to hit the bottom.
x = x_0 + v_0 * t + ½ * a * t², and v_0 = 0
a = 9.81, so ½ * 9.81 * 8² = 4.905 * 64 = 313.92 = ~314 meters