Question: While spelunking in a cave you take a 1 kg rock and drop it down a hole and measure that it takes the rock 2

While spelunking in a cave you take a 1 kg rock and drop it down a hole and measure that it takes the rock 2 seconds to hit the bottom. A little while later you find another hole and find that it takes a 2 kg rock 2 seconds to hit the bottom. Which hole is deeper?
While spelunking in a cave you take a 1 kg rock

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