this post was submitted on 30 Apr 2025
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Funny: Home of the Haha

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[–] Bruhh@lemmy.world 3 points 11 hours ago

Keeps texting his girlfriend

Outcome: Train go boom

[–] RandomVideos@programming.dev 14 points 18 hours ago (1 children)

Thats too easy of a question

If an object in the shape of a rectangle with the length of 2520 km and width of 1650 km, with a rotation of 24°53'24'', moving at half the speed of light, losing 34.56% of its speed every second, starting from the left-most point on the object touching point A, takes 45.23 seconds for the right-most point on the object to reach point B, how far away are the 2 points?

[–] Zaraki42@lemmy.ca 5 points 18 hours ago (2 children)

Solution:

  1. The object's length (2520 km) and its orientation don't directly impact the calculation of distance between points A and B, given the information provided.
  2. The object's speed and deceleration are crucial.

Initial speed = 0.5c (half the speed of light) Deceleration = 34.56% per second

Let's calculate the distance traveled by the right-most point of the object:

  1. Convert initial speed to km/s: 0.5c ≈ 149,896.229 km/s
  2. Calculate the distance traveled in 45.23 seconds, considering deceleration:

We'll use the formula for distance under constant acceleration (or deceleration):

d = v0 * t + (1/2) * a * t^2

However, since the deceleration is given as a percentage, we'll calculate the average speed over the time period.

Average speed = (initial speed + final speed) / 2

To find the final speed, we'll calculate the speed at each second and then find the average.

Let's simplify the calculation:

  1. Calculate the final speed after 45.23 seconds:

Speed reduction per second = 34.56% Final speed = 149,896.229 km/s * (1 - 0.3456)^45.23 ≈ 0 km/s (due to rapid deceleration)

Given the rapid deceleration, the object would likely come to a stop before 45.23 seconds. Let's estimate the average speed:

Average speed ≈ (149,896.229 km/s + 0 km/s) / 2 ≈ 74,948.1145 km/s

Now, calculate the distance:

d = average speed * time ≈ 74,948.1145 km/s * 45.23 s ≈ 3,390,911 km

However, this calculation assumes constant deceleration and average speed. Given the complexity and rapid deceleration, this approximation might not be entirely accurate.

Considering the object's length (2520 km), if the left-most point starts at point A, and the right-most point reaches point B after 45.23 seconds, the distance between points A and B would be approximately:

Distance ≈ d - object's length ≈ 3,390,911 km - 2520 km ≈ 3,388,391 km

Keep in mind that this calculation involves approximations due to the complexity of the problem.

[–] stephen01king@lemmy.zip 1 points 12 hours ago (2 children)

I assume they meant the object is moving along the line with the given angle from the object, therefore, to find the actual distance between A and B, you do need to take into account the orientation of the object to find both the longitudinal distance along the movement path and the transverse distance between the two corners of the rectangle. You'll then need to find the final distance by using Pythagoras theorem.

[–] RandomVideos@programming.dev 3 points 6 hours ago

the sizes and angles are not accurate

[–] reattach@lemmy.world 5 points 12 hours ago (1 children)

It's a copy/pasted answer from a LLM. I think relativistic effects would be significant, too

[–] RandomVideos@programming.dev 1 points 6 hours ago* (last edited 6 hours ago)

Wouldnt the relativistic effect only matter if i specified the point of reference?

Also, the approximation is terrible

[–] agent_nycto@lemmy.world 1 points 17 hours ago

Nah man the reason won't arrive, reasons don't run on roads.

[–] IndiBrony@lemmy.world 17 points 21 hours ago* (last edited 21 hours ago)

Jokes on you, the train will not arrive as it's broken down due to a lack of maintenance and has been removed from service!

[–] remon@ani.social 104 points 1 day ago (3 children)

Trick question, trains don't travel on roads.

[–] Lembot_0002@lemm.ee 71 points 1 day ago (1 children)
[–] sxan@midwest.social 38 points 1 day ago* (last edited 1 day ago) (2 children)

Also: in many places they share the road with cars.

Although, 72km/h...

[–] froh42@lemmy.world 2 points 5 hours ago

München, Oida!

[–] remon@ani.social 31 points 1 day ago (1 children)
[–] mkwt@lemmy.world 40 points 1 day ago (1 children)
[–] BeardedGingerWonder@feddit.uk 3 points 18 hours ago

You're pretty much making their case for them at this point.

[–] tenacious_mucus@sh.itjust.works 20 points 1 day ago (2 children)

My first thought as well…BuUuTt, Land trains are a thing, in Australia of course.

[–] Deceptichum@quokk.au 40 points 1 day ago (1 children)

If it helps we also have buses on train tracks.

[–] tenacious_mucus@sh.itjust.works 15 points 1 day ago (1 children)

Haa, i was gonna say “is that for real???”(like not a mishap) But there’s even a second way back there!

[–] Deceptichum@quokk.au 14 points 1 day ago (2 children)

The O-Bahn, becuase what else would English speakers call their busway.

[–] Lost_My_Mind@lemmy.world 2 points 19 hours ago

I'm gonna show her my O-Bahn face!

[–] prettybunnys@sh.itjust.works 5 points 1 day ago

what else would English speakers call their busway

The bus-o-bahn was right there

[–] thanksforallthefish@literature.cafe 9 points 1 day ago (1 children)

Damn, you right…i was going off memory…

[–] SkunkWorkz@lemmy.world 3 points 1 day ago (2 children)
[–] Kecessa@sh.itjust.works 2 points 1 day ago (1 children)

The fuck is wrong with the US?

[–] zippythezigzag@lemm.ee 2 points 18 hours ago

I wish this was the worst thing..

[–] remon@ani.social 2 points 1 day ago

That's insane. So glad this wouldn't be remotely legal where I live.

[–] fargeol@lemmy.world 22 points 1 day ago (1 children)

Roads? Where we're going, we don't need roads

[–] Lost_My_Mind@lemmy.world 2 points 19 hours ago

Good. Because this current administration isn't going to use taxes to maintain them.

[–] irish_link@lemmy.world 20 points 1 day ago

Ha dumbass can’t figure it out.

It’s 5 minutes!!

HOURS, I mean hours, fuck…

[–] LovableSidekick@lemmy.world 1 points 17 hours ago

Where else would you buy chains? Are there goth boutiques that sell overpriced designer chains?

[–] kibiz0r@midwest.social 3 points 23 hours ago
[–] OwlPaste@lemmy.world 5 points 1 day ago (1 children)
[–] ICastFist@programming.dev 11 points 1 day ago (1 children)

Ah, so you're counting the stops and the inevitable slowdowns from traffic

[–] scops@reddthat.com 6 points 1 day ago

At least it's not the US, where you'd need to add a couple hours of slowdown or standstill while regulation-breaking overloaded freight trains are jumping the priority list and blocking up the commuter lines.

[–] tetris11@lemmy.ml 3 points 1 day ago

Didn't specify curvature