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freebeard 09-12-2023 07:09 PM
0-100KPH in one second?
 
https://ethz.ch/From zero to one hundred in 0.956 seconds
Quote:
https://ethz.ch/en/news-and-events/e....196224215.jpg
Students from ETH Zurich and Lucerne University of Applied Sciences and Arts have broken the previous world record for acceleration with their hand-​built electric racing car, mythen. The vehicle accelerated from zero to 100 km/h in 0.956 seconds over a distance of 12.3 metres.
What it takes: four hub motors and a sucker plate.

redpoint5 09-12-2023 07:36 PM
The G-calculator says this is nearly 3 G of acceleration. Sounds fun.

freebeard 09-12-2023 07:50 PM
Title should read km/h. :(

I'd read the title as 10-100 miles per hour and thought it would feel like a rocket sled.

redpoint5 09-12-2023 07:53 PM
Quote:
Originally Posted by freebeard (Post 687663)
Title should read km/h. :(

I'd read the title as 10-100 miles per hour and thought it would feel like a rocket sled.
That would be closer to 5 G.

I don't know the formula to work this out, but I wonder, at a constant 5 G acceleration, how long of a track (railgun) would be required to send something orbital?

I recall something suggesting the track might span several states.

What I want is a track and bike with sufficient gearing on the moon to pedal to a speed that allows for nearly zero G (2,200 MPH).

freebeard 09-12-2023 09:11 PM
Not asking for much. :)


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