Falling to Your Death in a Mine
1,071
Published 2023-02-22
• Podcast In A Mineshaft - Safety Third 58
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Safety Third is a weekly show hosted by William Osman, NileRed, The Backyard Scientist, Allen Pan, and a couple other YouTube "Scientists". Sometimes we have guests, sometimes it's just us, but always: safety is our number three priority.
All Comments (8)
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This is the meaning of "you'll use this equation in real life one day"
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Absolutely insane he actually stepped over it
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300m free fall starting from 0 m/s would be about 7.822s.
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Assuming 80 kg human and STP, you'd hit a Vt of 66 m/s at around 6.73 s and 222 m down. The remaining 78 m or so would take 1.18 s to traverse, yielding a total freefall time of about 8 s. Delta-P wasn't considered, and you'd probably hit the wall multiple times, slowing you down.
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Without air resistance: t = sqrt(2h/g) and v = sqrt(2gh) so with 900ft or 274m, that's t = sqrt(2 × 274 / 9.81) ≈ 7.47s and v = sqrt(2 × 274 × 9.81) ≈ 73.32m/s or 164mph. The 150mph estimate was pretty close.
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Hamburger helpers
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use kinematics you goofballs
