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Dickl wrote:How fast does the earth go when travelling round the sun? Or doesn't that count?

67,000 miles an hour.

f90x wrote:I've traveled towards the earth using my own weight at approximately 125mph

What would the speed have been if you'd have weighed double?

(I'm not heading for the door, but I am now hiding behind the sofa)

A.J.T wrote:

Dickl wrote:How fast does the earth go when travelling round the sun? Or doesn't that count?

67,000 miles an hour.

Constant?

Corvus wrote:

A.J.T wrote:

Dickl wrote:How fast does the earth go when travelling round the sun? Or doesn't that count?

67,000 miles an hour.

Constant?

Average. It won't be constant because the orbit is elliptical.

Corvus wrote:

A.J.T wrote:

Dickl wrote:How fast does the earth go when travelling round the sun? Or doesn't that count?

67,000 miles an hour.

Constant?

I think it is pretty much constant unless you're counting on an atomic clock. You need leap years 'cos each orbit takes 365.25 days and the error mounts up, but otherwise I think it pretty much works?

70 on skis is insane; I've never done 500mph at 500 feet but I did a low level supply run in a Hercules years ago, so I suppose that was ~200mph at 50 feet, maybe slower? Very strange 'cos you have this feeling you could just step off the back like jumping from a tractor. Also did ~100mph or so across Salisbury Plain in a Scout helicopter at 0 feet, literally popping over walls; that was fun too... And on another gig I was working with some US Chinooks on Salisbury Plain and one was improving his low flying skills so that for a ghastly instant he was flying at -3" ... Huge cloud of dust and it held together thankfully, but he stuck to double figures after that...

Corvus wrote:

f90x wrote:I've traveled towards the earth using my own weight at approximately 125mph

What would the speed have been if you'd have weighed double?

(I'm not heading for the door, but I am now hiding behind the sofa)

125mph. It's terminal speed for the average human being (or anything) without any aerodynamic aids etc. but you knew that already I've also achieved 40mph on two (self propelled) wheels.

JamesL wrote:

Corvus wrote:

A.J.T wrote: 67,000 miles an hour.

Constant?

I think it is pretty much constant unless you're counting on an atomic clock. You need leap years 'cos each orbit takes 365.25 days and the error mounts up, but otherwise I think it pretty much works?

70 on skis is insane; I've never done 500mph at 500 feet but I did a low level supply run in a Hercules years ago, so I suppose that was ~200mph at 50 feet, maybe slower? Very strange 'cos you have this feeling you could just step off the back like jumping from a tractor. Also did ~100mph or so across Salisbury Plain in a Scout helicopter at 0 feet, literally popping over walls; that was fun too... And on another gig I was working with some US Chinooks on Salisbury Plain and one was improving his low flying skills so that for a ghastly instant he was flying at -3" ... Huge cloud of dust and it held together thankfully, but he stuck to double figures after that...

I'm going with AJT. Not that I think what you're ultimately saying is wrong, but I think the velocity varies due to the elliptical orbit. The same effect as the skier bringing their limbs in (I think). I'm slightly in awe of the mind of Kepler, to come up with the elliptical orbit theory and the way the swept area/time remains constant. At first his ideas on musical notes seem fruitcake, but I reckon maybe he, like the Ancient Greek geometers, was just looking for some underlying beauty and simplicity in nature. Dunno.


Edit: skater, not skier! Soz.

f90x wrote:

Corvus wrote:

f90x wrote:I've traveled towards the earth using my own weight at approximately 125mph

What would the speed have been if you'd have weighed double?

(I'm not heading for the door, but I am now hiding behind the sofa)

125mph. It's terminal speed for the average human being (or anything) without any aerodynamic aids etc. but you knew that already I've also achieved 40mph on two (self propelled) wheels.

Mornin. I was trying to be profound (and failing miserably) by questioning whether it was your weight which caused it? I admire anyone who has the ka hoo nahs to leave a perfectly good aircraft at xyz thousand feet. Mind you, I'm making the assumption that the aircraft was perfectly good!

Cheers

The Teutonic Tangerine wrote:This is my GPS fastest speed.



But this was on Skis and I was aged 55 at the time. I spent a week skiing in Niederau Austria and when I added up the weeks stats I had skied down the equivalenmt of over 120,000 feet and had covered 147 miles (going downhil on skis as opposed to going up hill on chairlifts).

Blimey! That's shifting on a pair of planks. I know this cos I managed 96kmh a couple of weeks ago in Austria and was only just in control. Shopping for some brown salopettes for next year to save embarrassment.

Mike

Those speeds are nothing, be ashamed with yourselves, your bragging rights are pathetic The fastest man on the planet is the GOAT he could throw the light switch and be in bed before the room went dark. So there!

I once hit about 180mph and I wasn't on a bike, in a car or an aircraft, just me and the air..

57 mph (according to bike computer) going downhill past Killhope lead mine on a Colnago Master Olympic and when I got to the bottom discovered the rear tyre was falling apart!! Never reached those dizzy speeds when skiing!!

dave the german wrote:Never reached those dizzy speeds when skiing!!

It was not really intentional - my average highest daily speed had been 58 to 60 on a particular slope and always in the afternoon. The day I did this run the lifts were bunged up so I worked my way across to another chair lift - got off at the top and turned left as usual - however at 9.30 am the sun had not yet been on the snow and the run had been groomed and only about three previous skiiers had been down - I just did my usual couple of turns then got into the tuck - I should explain that in the afternoons if you didn't get into a tuck and hoon down you had an uphill 200 yards to shuffle up to get over a hump at the bottom of that run if you wanted to get back to the other side of the ski area - So the surface is crispy and smooth and I'm in a tuck = 70mph. I have to say it didn't feel that much faster than 60 but maybe thats because the surface was so smooth.

Happy to say I set my own speed record last week, cycling on the flat I touched 33.5mph towards the end of a big ride - fastest I have ever gone entirely under my own effort.