🤯 A visual physics lesson at 80 km/h.
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@nexta I had to read this several times before I realised what you meant was it was the same speed as the truck was travelling, not the car
@peterbrown @nexta me too
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@nexta I may be misremembering, but I think Mythbusters wanted to do something like this but it was judged to be too dangerous. This really is very neat!
@bodhipaksa @nexta yes, Jamie talked about this in an AMA recently
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🤯 A visual physics lesson at 80 km/h.
Enthusiasts launched a man from a moving truck in the opposite direction - at the same speed the car was traveling.
The experiment spectacularly showed how relative speed works.
@nexta any chance this bot can can include alt text? Are replies monitored?
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@bodhipaksa @nexta yes, Jamie talked about this in an AMA recently
There's also a new podcast with Kari Byron and Tory Belleci called Mythfits and I think they referenced this exact video a few weeks back.
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@nexta now do it at 400km/h from a jet, it'd only be like ~30G of acceleration

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Ah - I was just wondering what kind of bomb-launching railgun they had in the fuselage!
I'd never heard of the A-5's unusual bomb bay configuration. Wikipedia explains that the payload "was propelled rearward at about 50 feet per second":
https://en.wikipedia.org/wiki/North_American_A-5_Vigilante#Design
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🤯 A visual physics lesson at 80 km/h.
Enthusiasts launched a man from a moving truck in the opposite direction - at the same speed the car was traveling.
The experiment spectacularly showed how relative speed works.
@nexta many years back, ZZ Top did a similar experiment where you’d sit in a spherical steel roll cage and they’d roll you out of the back of a pickup truck on the highway at high speed.
All was documented in their incredible music: “Master of Sparks”
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@nexta I had to read this several times before I realised what you meant was it was the same speed as the truck was travelling, not the car
@peterbrown @nexta same, I was watching the video looking for a car to show up
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Ah - I was just wondering what kind of bomb-launching railgun they had in the fuselage!
I'd never heard of the A-5's unusual bomb bay configuration. Wikipedia explains that the payload "was propelled rearward at about 50 feet per second":
https://en.wikipedia.org/wiki/North_American_A-5_Vigilante#Design
@toddz My uncle flew a lot of exotic stuff -- he's the only person I know with a Mach 2+ pin -- and he told me about the A5. I was quite young so I might be responsible for the inaccuracy.
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@nexta mythbusters did it without risking anyone’s life
@Kierkegaanks @nexta Where's the fun in that?
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@nexta
PS: Don't do this near light speed without changing the formula. A few other practical problems might show up too
@notsoloud @nexta xkcd relativistic baseball
You do not want to be the relativistic baseball. -
J jwcph@helvede.net shared this topic