How good is YOUR mechanical knowledge?

[Hoon]

Do scooters travel faster when going with the earth's rotation?

Yes.

Now I don't know about that?!? Speed in relation to what?

A fixed point on the earth without taking the earths rotation into account then no.

A fixed point in space and taking the earths rotation into account then maybe?

Because if you take the earths rotation into account (1600kph at the equator) then you also have to take into account the fact that the earth is moving around the sun at over 108,000 kph. So the scooter would travel faster on the dark side but slower on the light side.

But then our solar system is also spinning around the galaxy at 900,000kph.

And then our Milky way is moving through the galaxy cluster even faster!

[rwh]

Now I don't know about that?!? Speed in relation to what?

A fixed point on the earth without taking the earths rotation into account then no.

A fixed point in space and taking the earths rotation into account then maybe?

Because if you take the earths rotation into account (1600kph at the equator) then you also have to take into account the fact that the earth is moving around the sun at over 108,000 kph. So the scooter would travel faster on the dark side but slower on the light side.

But then our solar system is also spinning around the galaxy at 900,000kph.

And then our Milky way is moving through the galaxy cluster even faster!

Therefore all (speeding) tickets should be disputed on the basis that the law is impossible to obey.

Alternatively, when I measure my speed from my own frame of reference, I'm not moving at all, and never have.

Richard

[Ocean1]

Speed in relation to what?

Wasn't specified. On the basis that there's infinitely more reference points in the universe than that of the road surface immediately under said scooter, (all traveling at vastly higher speed) my answer is overwhelmingly more credible.

Besides:

I don't know about that?!?

[Jantar]

92%

And I agree with Saslex on the NA engine question. Air is sucked in as the pressure in the cylinder reduces as the piston moves down.

Another one that is open is the one on the venturi effect where water is passed rapidly through a tube with a constriction. If water is passed rapidly then tube B will act as a suction and no water will rise in the tube. That is how a Carb works.

[Dave-]

72%

cocked up the weights on pullys, 1 or 2 of the electrical questions and some others that I realized only after I'd hit next.

as for the piston (which i got wrong) when the fuel ignites, the exhaust is sucked out and you're left with a vacume, beucase the atmosphear of a vacume is 0 and earths atmosphear is 1 then the air from outside the engine trys to fill this gap.

I didnt realise this until I'd hit next and cbf doing the whole thing again.