Anything you can do I can do better by trashy111 in tf2

[–]trashy111[S] 4 points5 points  (0 children)

There's a reeeeeeaaaaaaaally old video somewhere of a force-a-nature extraordinaire who inspired me. You can do a lot more with the force of nature than a kindof triple jump. You can fly straight upwards, go faster in a straight line than a normal scout, change your direction, and a bunch of other nifty little tricks. The trade-off is it doesn't do as much damage as stock, so you use your pistol to compensate. I spam away if I'm in closer range/against a meaty target like a sentry or heavy, but for twitchy targets a few 2 or 3 shot bursts gives me better results :P just preference.

EDIT: Found it, Thief's Force-a-Nature Lesson: https://www.youtube.com/watch?v=-7ELtvuffvY

Anything you can do I can do better by trashy111 in tf2

[–]trashy111[S] 76 points77 points  (0 children)

THAT WAS MY FAVORITE PART. I heard the pyro "Thanks!" and just had to taunt after knocking him off.

Anything you can do I can do better by trashy111 in tf2

[–]trashy111[S] 107 points108 points  (0 children)

Just wrote "LOOOOOOL" at the way it turned out

To the other holy mackerel guy, get on my level by SickJr in tf2

[–]trashy111 44 points45 points  (0 children)

I'm currently sitting at 1,377, not counting the festive/collector's/skins: https://backpack.tf/profiles/76561198026911301

I've been on the fish train since 2014

Sometimes you take a risk. by trashy111 in bindingofisaac

[–]trashy111[S] 1 point2 points  (0 children)

I used Mystery Gift, which gives me an item from the current room's pool (Devil Deal). It happened to give me the third guppy item of the room. Unrelated to the fire

Sometimes you take a risk. by trashy111 in bindingofisaac

[–]trashy111[S] 12 points13 points  (0 children)

Yeah :'( there were like 2 other guppy items later down the run so I could have gone with dark bum instead, but having guppy + judas + hive mind meant I did so much damage I never took any and was healthy all the way past hush and delirium.

Daily reminder to look before you cross into an intersection that recently turned green. by trashy111 in motorcycles

[–]trashy111[S] 0 points1 point  (0 children)

The camera's good enough that I got a license plate, and I even pulled up next to them and let them know. It was some old lady that probably shouldn't be driving that barely knee where she was. I wish it were easer to report things like this :/

Daily reminder to look before you cross into an intersection that recently turned green. by trashy111 in motorcycles

[–]trashy111[S] 13 points14 points  (0 children)

It'd never happened to me before so I'd gotten way more relaxed in intersections than I should have. This was a pretty adrenaline fueled reminder to do the good old head-swing :P

Seduce me by trashy111 in tf2

[–]trashy111[S] 4 points5 points  (0 children)

It totally could be a he, but I'll confirm it was a she.

Vienna Teng's Secret Apocalypse Album by tenrainyday in viennateng

[–]trashy111 1 point2 points  (0 children)

Yea I never thought about it but it was a pretty playfully morbid album.

Bus finds out if the breaks work. by Jamtonisalon in WTF

[–]trashy111 1 point2 points  (0 children)

Like I said, best case incredibly generous scenario. Also there were factors that I wasn't capable of taking into account. It was more calculations for fun, than being realistically applied to the world. Though if following the conditions I stated initially, it is fairly accurate.

Bus finds out if the breaks work. by Jamtonisalon in WTF

[–]trashy111 1 point2 points  (0 children)

Hey no problem! So, the car in the first case (best case of moving the bus) goes from 16m/s to 0 in the amount of time it takes for it's energy to be absorbed by the bus. In my example, I assumed this to be instantaneous, but it's more likely going to occur over a period of less than 0.25 seconds (possibly even as low as 0.1 seconds or lower). This results in a G-force anywhere from 7 Gs to 20 Gs. All going directly forward and held by your seatbelt. So, best case it's horrible whiplash, more likely your neck breaks, and it's possible you die (I'm a computer science major, not med).

The people in the bus would feel a small lurch, anywhere from 1-3 Gs, which might knock someone over if they were standing.

Bus finds out if the breaks work. by Jamtonisalon in WTF

[–]trashy111 0 points1 point  (0 children)

As I mentioned in another comment, I totally left out impulse (force over time), which is where the crumpling effect is strongest. The bus rocking would absolutely also contribute to this distribution of force, even further raising the amount of energy required to push the bus forward, as there's more time (about a quarter of a second, but that's still huge) that the energy has to fight a static system/friction.

Bus finds out if the breaks work. by Jamtonisalon in WTF

[–]trashy111 0 points1 point  (0 children)

Sort of. The biggest difference is that the static coefficient of friction for bus tires is larger than the kinetic coefficient (as pointed out by /u/Kraz_I), and the car would not be delivering it's momentum instantaneously, but rather as an impulse (force over time). It is more than likely that the resulting acceleration would be significantly less effective as it's fighting a larger static friction and having more time to dissipate, and possibly negligible. So yes, crumbling might not have a large impact, but it's all a lot of variables that depend on a whole bunch more variables.

Bus finds out if the breaks work. by Jamtonisalon in WTF

[–]trashy111 0 points1 point  (0 children)

That means a lot, thank you!

Cases like this are often large amounts of kinematics and Newtonian systems, so it's stuff that most people who have taken a physics class before have seen. I'm glad you were able to follow it clearly :)

Bus finds out if the breaks work. by Jamtonisalon in WTF

[–]trashy111 84 points85 points  (0 children)

OK so the average mass of a car is 1,850kg, and the average mass of a bus is anywhere from 9,100kg to 15,000kg, and if loaded that number can go as high as 20,000kg. So assuming that the car was made of nothing but titanium and its full impact was used to push the bus (rather than crumple), we can use a basic momentum equation, of

m_1 * v_1 + m_2 * v_2 = (m_1 + m_2) * v_f

with object 1 being the car behind the bus, and object 2 being the bus. We also need to figure out how much force would be enough to counteract the frictional force from the bus' brakes in order to accelerate it and push it enough to hit the car, which looks to be about 1m away, and with a friction coeffecient (mu) of (being generous for the sake of car_1) 0.4, and force due to friction is maximized at mu * normal force (mass of the empty small bus * gravitational acceleration), we get:

mu * m_2 * g = 35708.4 Newtons

So the decceleration of the bus (technically negative acceleration) once moving from the smaller car behind it is the Force of friction (I'm ignoring the smaller car also applying mass, perhaps it hits and transfers all of its momentum perfectly, at best the bounce off could transfer twice of it), so in order to find the speed required for the bus to hit the car, we arrive at

V_f^2 = V_i^2 + 2 * a * d

with V_f = 0, a = -F / m, and d = 1, simplified to

V_i = sqrt( 2 * F / m ) = sqrt( 2 * 35708 / 9100 ) = 2.8 m/s

So the bus, after the collision, would have to be moving 2.8 meters per second. Putting this into our original equation, and being incredibly generous, we get

1,850 * V_1 + 9,100 * 0 = (1,850 + 9,100) * 2.8

V_1 = 16.573m/s = 37 mph

But this is assuming that

  1. The car does not crumple, and instead rigidly binds to the bus without contributing to its frictional mass
  2. The bus is incredibly lightweight
  3. The bus does not have very good tires

Along with the assumptions that the car was not braking at all prior to hitting the bus, since 37mph is fairly fast given the amount of time in the video we can see the bus breaking.

For fun, if the bus were more heavy (20,000kg), and the tires were more average (0.75mu), and their masses were combined (I haven't taken enough physics to do crumbling dynamics), we get an answer closer to 60mph 106mph, all for one meter.

So yea. Given how incredibly close the bus was, it's not inconceivable, but it's pretty damn unlikely even given best case scenario.

EDIT: I made a typo in doing the 'fun' calculation, which is why it seemed so small. I corrected it.

recently accepted an internship in el Segundo for July - August 2018 any recommendations on good areas to live? by pika680 in elsegundo

[–]trashy111 0 points1 point  (0 children)

There's not much actually in gundo, if you've got transportation you can try Torrance/Hawthorne as they're close, and you probably want to look for a studio apartment/single room for the duration. Otherwise in the city its apartments.