How fast can I really ride - physics

[smoky]

The sun is shining, the world is turning - and I wondered;
If the world is 40,300 Kilometres in circumference, and it rotates once every 24 hours, then it is rotating at 1,679 Kilometres per hour
So if I were to travel in the direction the sun is traveling in, at 100 Klm/hr an hour on my bike - would my true speed be 1,779 Klm/hr, of course I would need to multiply that by the cosine of my particular latitude wouldn't I ?


I am working on calculating the speed of the Earth as it orbits the Sun. Not sure why.
It's about a 940 million kilometre trip annually, so if I divide that by the hours in a year (8544) that should give me the orbital speed in kilometres per hour (110,019 Klm/hr) - look at that, a first preliminary attempt at geophysics

[hayd3n]

:

huh?????
isint the world square?

[oldrider]

The sun is shining, the world is turning - and I wondered;
If the world is 40,300 Kilometres in circumference, and it rotates once every 24 hours, then it is rotating at 1,679 Kilometres per hour
So if I were to travel in the direction the sun is traveling in, at 100 Klm/hr an hour on my bike - would my true speed be 1,779 Klm/hr, of course I would need to multiply that by the cosine of my particular latitude wouldn't I ?


I am working on calculating the speed of the Earth as it orbits the Sun. Not sure why.
It's about a 940 million kilometre trip annually, so if I divide that by the hours in a year (8544) that should give me the orbital speed in kilometres per hour (110,019 Klm/hr) - look at that, a first preliminary attempt at geophysics

Careful, they might add that onto your next ticket, then again if you were going the other way.............Hmmm!

[Mikkel]

The sun is shining, the world is turning - and I wondered;
If the world is 40,300 Kilometres in circumference, and it rotates once every 24 hours, then it is rotating at 1,679 Kilometres per hour
So if I were to travel in the direction the sun is traveling in, at 100 Klm/hr an hour on my bike - would my true speed be 1,779 Klm/hr, of course I would need to multiply that by the cosine of my particular latitude wouldn't I ?


I am working on calculating the speed of the Earth as it orbits the Sun. Not sure why.
It's about a 940 million kilometre trip annually, so if I divide that by the hours in a year (8544) that should give me the orbital speed in kilometres per hour (110,019 Klm/hr) - look at that, a first preliminary attempt at geophysics

Besides the, obviously, pointlessness of this exercise you're going the wrong way. If you travel the same way that the sun is - east to west - you'll be going the other way compared to the rotation of the earth. Also, you would need to do it at equator.

Now figure out your speed compared to:

1. The center of the Milkyway.
2. The Andromeda galaxy.
3. The furthest quasar.

Have fun.

[p.dath]

Your making the rather obvious mistake of assuming our universe is standing still. It is not. It is currently expanding, so your speed would be much more than you think (assuming you are calculating your speed relative to the where the universe is exploding from).

[p.dath]

How about this. The image of you on your bike is travelling much faster than you again.

[Forest]

Your making the rather obvious mistake of assuming our universe is standing still. It is not. It is currently expanding, so your speed would be much more than you think (assuming you are calculating your speed relative to the where the universe is exploding from).

The universe is expanding, but don't make the mistake of thinking that it is expanding into empty space.

In other words, it isn't an outward explosion from a specific point or location.

[munster]

Here, this will clear things up for you

[icekiwi]

huh?????
isint the world square?

Don't be silly its Flat....

[smoky]

I was hoping to keep the thread on topic - speed on earth, but if you really want to know;

I am still unconvinced about the ever expanding universe and the conclusions science has drawn from unproven hypothetical suppositions.
I liken the reality we live in to a constrained illusion created by the expansion of 4 dimensions, 4 of a possible 11. What science can see - what is in the heavens, is just a reflection of a far greater reality - we see thru a glass dimly

The exponential possibilities of what reality could mean, the share magnitude of an unfathomable universe so far more complex and incomprehensible to beings locked in these limited dimensions - can not be understood, nor even reasoned by mere mortal - it rests beyond the curtain of carbon based life

Some ideas around 'string theory', and the latest scientific research and conjecture (the theory of everything), are the closest we have come to even understanding our reality, and it serves to show us how much we will never be able to comprehend outside of our dimensional space. We are proving that the universe may well be beyond our understanding, and even in observing it we change it's very nature.
time creates a reality that creates illusion

[NDORFN]

Good luck with that.

[imdying]

Besides the, obviously, pointlessness of this exercise you're going the wrong way. If you travel the same way that the sun is - east to west - you'll be going the other way compared to the rotation of the earth. Also, you would need to do it at equator.

Now figure out your speed compared to:

1. The center of the Milkyway.
2. The Andromeda galaxy.
3. The furthest quasar.

Have fun.

How did I know that you'd be the one pointing out blatantly obvious to the OP

[Finn]

I don't know much about science but you better make sure you check your tire pressures before trying any of this.

[smoky]

B...you're going the wrong way. If you travel the same way that the sun is - east to west - you'll be going the other way compared to the rotation of the earth.

well picked up - my mistake, just shows how important pair review is

Also, you would need to do it at equator.

Not if I multiply it by the cosine of my particular latitude I wouldn't, surely?

[Mikkel]

How did I know that you'd be the one pointing out blatantly obvious to the OP

How did I know you'd post a completely unhelpful comment upon the fact I was pointing out the blatantly obvious?

Not if I multiply it by the cosine of my particular latitude I wouldn't, surely?

Yes, you are most correct. I just missed the last part of the paragraph, my bad.

Now tell me, what is the relative decrease in your tyres' contact patches - due to the centripetal force - depending upon whether you ride at equator or one of the poles.