HistoryPorn

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Relive the Past in Jaw-Dropping Detail!

HistoryPorn is for photographs (or, if it can be found, film) of the past, recent or distant! Give us a little snapshot of history!

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Be respectful and inclusive.
No harassment, hate speech, or trolling.
Engage in constructive discussions.
Share relevant content.
Follow guidelines and moderators' instructions.
Use appropriate language and tone.
Report violations.
Foster a continuous learning environment.
No genocide or atrocity denialism.

Pictures of old artifacts and museum pieces should go to History Artifacts

Illustrations and paintings should go to History Drawings

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Aftermath of a B-25 Bomber flying into the Empire State Building, 1945 (i.redd.it)

submitted 4 weeks ago by [email protected] to c/[email protected]

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[–] [email protected] 2 points 3 weeks ago* (last edited 3 weeks ago) (1 children)

I'm no mathlete but looking up the formula for kinetic energy it's K.E. = 1/2 m v^2 so I'm pretty sure velocity is going to have exponentially greater effect on kinetic energy than mass.

[–] [email protected] 2 points 3 weeks ago

I guess it's because of the huge difference in weight that we see such a difference in kinetic energy from pellet guns, even though velocity has an exponential impact on the energy. A standard pellet weighs under 14 grains, and a .22 LR bullet weighs 40 grains. Thanks for sharing the formula though. I didn't realize how huge of a contribution velocity makes for kinetic energy, and I'll definitely look for a faster rifle whenever I upgrade my air rifle.