You’re Traveling 50 MPH – What Part of Your Car is Traveling 0 MPH? – IOTW Report

You’re Traveling 50 MPH – What Part of Your Car is Traveling 0 MPH?

Thursday, 7 December 2023, 17:08 BFH Uncategorized 55

Seems to me NDT switches up the parts, sometimes saying parts of the wheel are spinning (and counting that speed), and at other times saying parts of the wheel are moving linearly (and calculating that speed.)

I could be wrong. I’m not an engineer, mathematician or an astrophysicist.

55 Comments on You’re Traveling 50 MPH – What Part of Your Car is Traveling 0 MPH?

  2. The whole wheel (and the rest of the car) is still traveling down the road at 50mph.
    If I stand motionless at the side of the road, I can watch the wheels go by at 50mph, or whatever speed the car is going.

    Neil is just a slightly smarter version of Bill Nye.

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  3. It’s like he is taking a snapshot in time, and saying in that moment the wheel on the ground is not skidding, so it’s stable on the ground and technically not moving forward. But in that same snapshot, the top of the wheel is not moving forward. I need to get high.

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  4. Without watching the video, the portion of tread on the tire that is touching the ground could be considered ‘stationary’. However, once off the ground it is either moving slower or faster than the car depending on it’s location with respect to the center of the tire.

    Pointless to analyze that, unless you’re designing tire tread I suppose.

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  6. Wait, if after a minute and 12 second the entire car is a mile farther done the road, unless you lost a lug nut, the entire car is traveling 50 mph. There’s no getting around that. This is mental masturbation.

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  11. So in twenty minutes of hauling ass the tanks left town but the tracks still there?

    Look Neil got his head up and locked. I believe he’s stomping all over Einsteins theory of relativity. Where’s are braniacs. Paging Uncle Al. Paging Jethro

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  16. In engineering lingo there is a term called a “free body diagram”. It represents your subject in terms of physics associated with it at an instant in time.
    A free body diagram of a wheel rolling along the road shows the center travelling at the average speed of all particles of that wheel in a linear direction (what the speedometer says). Since that wheel is spinning the particles rotating around the axle are experiencing rotational motion along with the linear motion of the center. If you look at one instant in time the spot of the wheel touching the ground is not moving, while the spot directly opposite (at the top) is moving at twice the velocity of the center. Everything averages out so the velocity of the entire wheel is that of the center. Of course, this is assuming this isn’t Brad’s Duster doing a burnout…

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  19. Im not a fan either, but in this instance, he’s right.

    At any given time, the top of the wheel is going forward 100 mph while the bottom, against the ground, is going zero. Of course, no spot on the wheel stays in contact with the ground but an instant and then begins to climb up the top, where it will be going forward 100 mph.

    And yes, the rim that’s bigger than the wheel is moving backwards.

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  20. And, because a movie or video is shot at a certain frames per second rate, the movie sometimes shows no wheel spin or reverse spin.
    I’m sure they could do some CGI corrections now. I remember how the old wagon or stagecoach spokes looked funny turning backwards in the old westerns.

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  23. I watched the whole video.
    He is generally correct until he gets to the radar part. There is is full of shit. Radar uses the doppler effect to compare the frequency of a reflected radar signal to what was sent. The spinning wheel theory won’t work there.

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  25. Okay, Fine.
    He is Right, but only for a fraction of time that in infinitely divisible.

    There is an infinite amount of time between 0 & 1 or

    1/infinity

    aka

    Undefined

    Check Google

    Now I’m going to Sear a T-Bone 2 min flip / 2 min Flip & repeat once for Diamond pattern.

    2

  27. Kcir – Add homemade sweet potato fries, a complete salad with balsamic vinegar/olive oil dressing and hot boysenberry pie with vanilla ice cream for dessert. Call me when ready!

    4

  29. And then the Earth is orbiting the sun at 67,100 mph, and the solar system is orbiting the galactic center at 447,000 mph. Oh yeah, the galaxy is moving around the universe too. How fast are we going now? I lost track.

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  30. Wasn’t it a Greek who argued that since to walk 100 yards you have to walk 50 first, to walk 50 yards you have to walk 25 first, etc., so ultimately you don’t move? This argument is something like that, provably false. Every part of a car is moving. The *velocity* of moving parts, which includes direction and speed, wheels for example, is a combination of movements, and sure, some have a rearward rotational velocity that momentarily balances the forward velocity. But every part of the car is moving. Just try to stop it and you will see.
    I remember when I was still a student driver, driving the family wagon (with the family in it). Accidentally shifted into reverse… fortunately kicked it out immediately, but had it taken hold, well that would have been a good example of nothing is stationary, at least until you stop it. 🙂

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  33. I’ll go back and watch the rest of that stupid ass and read comments, but I just have to start with what I heard urping out of his mouth right at the point where the video was cued:

    …at whatever speed you’re going, okay, there’s a part of your car, all right, that is going forward at zero miles per hour.

    This is abysmally stupid even for Tyson.

    If you are moving at zero miles per hour THERE IS NO FORWARD. There is no backward. There ain’t no sideways nor up’n’down.

    In fact, and alluding to BFH’s first comment (I haven’t read past that), at any INSTANT the whole care IS NOT MOVING AT ALL. Motion requires a time measurement, and an instant has zero as its time measurement. Time is in the DENOMINATOR of distance/time and YOU ARE NOT ALLOWED TO DIVIDE BY ZERO.

    If my blood pressure comes down I may post more, but this whole thing is unbelievably dumb.

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  36. Neil De@$$ee Tyson is an Affirmative Action scientist not to mention an insufferable prick too.

    A few years ago he asked the question “Do you know what most of the World calls December 25TH next week? Thursday.”

    He mocks Christians but wouldn’t dare mock islam or it’s pedophile profit mohammad.

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  38. The contact patch of the tire is traveling at zero mph; the axle is traveling at the speed of the vehicle. If the brakes are locked, the contact patch of the tire is traveling at the speed of the vehicle.

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  39. Using his train analogy. If I put my car in a ditch and spin the wheels, then the entire wheel, top, middle, and bottom are all going backwards.

    Now that you’re armed with this knowledge, if you ever spin off the road into a ditch, just hit the gas and you’ll go backwards from where you came and no longer be in the ditch.

    Oh, that’s not how it works? Then what’s even the point of this?

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  40. Actually, if you’re on the level applying torque to your wheels to overcome all sources of friction, the part of the tire that’s in contact with the road is slipping ever so slightly.

    There ain’t no free lunch DeAss.

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