• @umbraroze@lemmy.world
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    11 hour ago

    There’s this Finnish joke that doesn’t translate well, about a physicist who got pulled over by police. “Uh, I guess I accelerated a bit.”

    Tap for spoiler

    (A particle accelerator is a machine that accelerates little bits. Do you get it now?)

  • @BenLeMan@lemmy.world
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    42 hours ago

    Break Gas? Never heard that expression before. I always thought it was “break wind”. 😆💨

  • @Brosplosion@lemm.ee
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    2023 hours ago

    Is it an accelerator? Or is it a jerk pedal? Technically the gas pedal controls the change in acceleration, right?

    I definitely have friends

    • @arcane@lemmy.world
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      14 hours ago

      No, if there is constant pressure on the accelerator, there is a constant acceleration on the car.

      The jerk comes with the rate of change of pressure on the pedal (e.g. if you stomp on it)

      That would make the driver the jerk 🤔

    • @Revan343@lemmy.ca
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      1522 hours ago

      Technically the gas pedal controls the change in acceleration, right?

      Technically it controls the amount of air and/or fuel delivered to the engine (in a gas engine, the pedal directly controls airflow; in a diesel engine it directly controls fuel flow)

    • @DrSteveBrule@mander.xyz
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      23 hours ago

      Acceleration in physics terms just means a change in velocity. Velocity is speed in a given direction. The steering wheel, gas pedal, and brake pedal all accelerate the vehicle.

      • @Revan343@lemmy.ca
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        2122 hours ago

        Acceleration in physics terms just means a change in velocity. Velocity is speed in a given direction

        They definitely know that, given that they know that change in acceleration is called jerk

        • billwashere
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          920 hours ago

          And I had no idea what the fourth derivative was called so I had to look it up. It’s called snap or jounce.

          • @nBodyProblem@lemmy.world
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            618 hours ago

            And fifth/sixth derivatives are crackle and pop because some physicists thought it would be funny to have it be “snap crackle and pop”

          • @0ops@lemm.ee
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            318 hours ago

            I remember when my calculus professor offhand mentioned these and jerk. He had a really dry sense of humor, so I didn’t realize that he wasn’t joking with us (the class) until like two semesters later.

    • @mexicancartel@lemmy.dbzer0.com
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      523 hours ago

      Increasing speed -> acceleration Decreasing speed -> negative acceleration Changing direction -> Vector acceleration(change in velocity)

          • @MisterFrog@lemmy.world
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            07 hours ago

            As someone who prefers not to drive where possible, and in a country where manual for regular cars is not common, why do people think manual is so great?

            Gives you some more control on your gears, sure. But heck, the only time I ever, ever need it is going up or down very steep hills - for which there are low gear settings on most cars which you can switch on for those moments.

            For most people, it’s just a massive waste of time to learn, when an engineered solution already exists and presumably doesn’t add significant enough cost to be worth not having it (I assume, because of the lack of demand, here).

            Is it just, for the “love of driving”? Okay fair enough, but that’s your hobby then, not sure why we need to like it also

            In any case, do enlighten me because I don’t get it haha

          • Final Remix
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            21 day ago

            BMW was even pushing customers to stop ordering manuals a few years back, so they could just focus on automatics.

            • @rabber@lemmy.ca
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              1 day ago

              Yeah I literally spent 3 years looking for an n55 335i msport manual. And that was almost 10 years ago. Never selling this car lol

    • @BossDj@lemm.ee
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      111 day ago

      I’m on mobile and could be wrong, but this picture looks like it’s an automatic and that’s a foot rest, not a clutch (nearly all Fords have a large plate like that in that spot to rest your left foot)

    • @Trollception@sh.itjust.works
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      1 day ago

      That looks like a dead pedal (foot rest), not a clutch pedal. Normally only the gas pedal has a full pedal face on it. A clutch pedal normally looks like a brake pedal.

      Edit: Eh someone already said this but I agree with them.

  • @mmddmm@lemm.ee
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    81 day ago

    No, one of them is the “don’t accelerate” pedal you use to switch gears.

    • Natanael
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      524 hours ago

      You’re applying acceleration to the gear switcher

      • @stelelor@lemmy.ca
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        120 hours ago

        It could be the handbrake (well, footbrake). If that’s the case, it’s unusually close to the other pedals.

        • @mmddmm@lemm.ee
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          218 hours ago

          And way too large, and way too low.

          Handbrake pedals are usually small pedals, away from the others and raised so it’s uncomfortable to reach them.

      • GormadtOP
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        121 hours ago

        Exactly my thinking, looks like a dead pedal not a clutch.

        I’ve never seen a clutch bigger than the brake pedal.

  • @credo@lemmy.world
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    111 day ago

    Okay student, now turn the accelerator and feather the accelerator as you accelerate into the curve, then press the accelerator to accelerate your acceleration out the curve.

  • Prehensile_cloaca
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    81 day ago

    Can you fucking learn homonyms if you’re going to make an entire ass meme about something?

    • TheRealKuni
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      71 day ago

      I learned something today.

      I was taught in my younger days that “homonyms” were words that were spelled the same but pronounced differently, and “homophones” were words that were pronounced the same but spelled differently. “Break” and “brake” would then be homophones.

      But it turns out “homonym” is the broader category including “homophones,” “homographs,” and words where both are true (same spelling and pronunciation, but different meanings). So homophones are homonyms.

      TheMoreYouKnow.gif

      P.S. Though Wikipedia says a more technical definition would limit “homonym” to, specifically, the third category, words that are spelled and pronounced the same but with different meanings. They give examples of “stalk” (part of a plant) and “stalk” (follow/harass a person), or “skate” (glide on ice) and “skate” (a type of fish).

      P.P.S. This reminds me of the autoantonym (a word that is its own opposite) “cleave,” which can mean “to adhere firmly and closely or loyally and unwaveringly” or “to split or sever (something), especially along a natural line or grain.“ I don’t know if “cleave” is technically a homonym, or if these are simply two definitions for the same word, and I don’t know who would decide that. But it’s still a fun word.

    • @merc@sh.itjust.works
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      319 hours ago

      In common usage, “accelerate” means “go faster”.

      In physics “accelerate” means “change of velocity over time”. It doesn’t just mean that the velocity increases, just that it changes.

      In common usage “velocity” is the same thing as “speed”.

      In physics “velocity” is “speed in a specific direction”. So, “80 km/h” isn’t a complete velocity statement. “80 km/h going west” is.

      So, a car going at a speed of 80 km/h has a velocity of 80 km/h in the forward direction. Pressing the accelerator causes an acceleration in the forward direction, increasing the speed/velocity. Pressing the brake causes an acceleration in the backward direction, decreasing the speed/velocity. Turning the wheel causes an acceleration in the left/right direction. In this case, the speed might not change, but the velocity changes because the direction of travel changes.

      If you imagine blowing on an air hockey puck it’s a bit easier to understand. There’s a fundamental rule in Physics that F = m × a, force is equal to mass times acceleration. Or, force divided by mass equals acceleration. If you blow on an air hockey puck, you exert a force on it, causing it to accelerate. If the air hockey puck is moving away from you, blowing on it will cause a forward acceleration increasing its velocity. If you blow on it as it’s coming towards you, you cause an acceleration backwards, decreasing its velocity. If you blow on it as it’s passing by you, you accelerate it sideways. In every case the same F=m × a equation applies, but sometimes the speed gets bigger, sometimes it gets smaller. The trickier one to calculate is when the force causes the direction of travel to change. Then instead of just needing an “x” variable you need “x” and “y”, or if you’re talking about velocity, vx and vy.

      So, in a car, the accelerator increases the engine output which causes a force on the tires that results in a forward acceleration. The brake pedal causes the brakes to exert a force on the tires which results in a backwards acceleration. The steering wheel causes the tires to exert a force on the car accelerating it left or right.

    • @dependencyinjection@discuss.tchncs.de
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      1 day ago

      I am not smart but this is what I get from this meme.

      It’s a play on how physics describes acceleration. In physics acceleration isn’t just about speeding up but any change in velocity.

      So:

      • Gas = Positive acceleration
      • brake = negative acceleration
      • steering = velocity takes speed and direction, so acceleration.
    • @spicystraw@lemmy.world
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      9 hours ago

      Acceleration is a change in velocity. When you press the gas pedal or brake, you feel positive or negative acceleration. When you turn the wheel, you feel sideways acceleration.

      Another analogy is force: F=ma. You feel a force if you accelerate, brake, or turn the wheel; all three induce acceleration as defined in physics.

      • @Coreidan@lemmy.world
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        123 hours ago

        So something slowing down is acceleration?

        I still don’t get it. Surely the definition of acceleration is a lot more than just a change in velocity.

        But I’m just a dumb ass so don’t listen to me.

        • @spicystraw@lemmy.world
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          18 hours ago

          Yeah, I get what you mean. So, “acceleration is how fast an object’s speed changes”. See, hitting the brakes or the gas are both acceleration, physics-wise. But not usually how we talk about it.

          It’s easier to grasp when you’re doing the calculations.

          You’re pretty smart to ask and dig deeper!

    • @Evil_Shrubbery@lemm.ee
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      21 day ago

      Well, with Alfas half of those accelerators probably don’t work!

      (Actually jk, afaik this is only an old-timey joke now)