/sci/ - Science & Math » Thread #13091936

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Anonymous Fri 07 May 05:43:32 2021 No.13091936 View Reply Original Report

Quoted By: >>13092081 >>13092161 >>13092169 >>13093906 >>13094114 >>13094179

are these the same? they feel kinda the same?
>laying in bed, force on back
>accelerating car, force on back
is gravity accelerating me into bed faster than my car does?

Anonymous

Anonymous Fri 07 May 2021 05:51:08 No.13091959 Report

Quoted By: >>13092060 >>13095003

it looks like you would need a 2.75s 0-60 (mph because I'm not a smooth brain who can only multiply a unit by 10) to have gravity equivalent acceleration
you would need like an ariel atom for that

Anonymous

Anonymous Fri 07 May 2021 05:54:38 No.13091968 Report

Quoted By: >>13095779

or a tesla, is laying in my bed really as exhilarating than a 100k car??

Anonymous

Anonymous Fri 07 May 2021 06:49:08 No.13092060 Report

Quoted By:

>>13091959
typical braking acceleration can be as much as 0.5-0.7 G, you just need a seat pointing the opposite direction so the force is in the right direction

Anonymous

Anonymous Fri 07 May 2021 06:58:06 No.13092081 Report

Quoted By:

>>13091936
have you considered becoming a doctor instead of an engineer?

Anonymous

Anonymous Fri 07 May 2021 07:26:05 No.13092161 Report

Quoted By:

>>13091936
No. There's also gravity and the earth working against the car.

Anonymous

Anonymous Fri 07 May 2021 07:29:28 No.13092169 Report

Quoted By:

>>13091936
No. Gravity accelerates you at 9.8m/s2 and your bed makes an opposing force woth the same acceleration, or you would be falling through your bed.

Anonymous

Anonymous Fri 07 May 2021 07:37:43 No.13092199 Report

Quoted By: >>13092243 >>13093899

Isn't this the basis of GR? Gravity isn't a real force, it's the curvature of space and time. When in free fall towards the surface of Earth you are at rest in space and when laying on the surface of Earth you are accelerating upwards through space.

Anonymous

Anonymous Fri 07 May 2021 07:52:14 No.13092243 Report

Quoted By: >>13093871 >>13093880

>>13092199
gravity is mostly time-curvature

Anonymous

Anonymous Fri 07 May 2021 16:57:02 No.13093871 Report

Quoted By:

>>13092243
so is driving

Anonymous

Anonymous Fri 07 May 2021 16:59:25 No.13093880 Report

Quoted By:

>>13092243
>time-curvature
Nonsense. No such thing.

Anonymous

Anonymous Fri 07 May 2021 17:03:37 No.13093899 Report

Quoted By:

>>13092199
Exactly and precisely this

Anonymous

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Anonymous Fri 07 May 2021 17:04:41 No.13093906 Report

Quoted By:

>>13091936
according to nasa, it's the same

Anonymous

Anonymous Fri 07 May 2021 18:00:13 No.13094114 Report

Quoted By:

>>13091936
In the car, you would add the "force" vector to the downward gravity vector. So the final force would be diagonal.

Anonymous

Anonymous Fri 07 May 2021 18:14:08 No.13094179 Report

Quoted By:

>>13091936
No, the car must accelerate constantly.

Anonymous

Anonymous Fri 07 May 2021 20:42:07 No.13094938 Report

Quoted By:

Yes. If you were on a rocket accelerating at 9.8m/s^2, it would feel just like regular gravity.

Anonymous

Anonymous Fri 07 May 2021 20:54:06 No.13095003 Report

Quoted By:

>>13091959
911 Turbo S will do pretty much exactly that time

Anonymous

Anonymous Sat 08 May 2021 00:12:04 No.13095759 Report

Quoted By:

Actually yes they are the same anon. There exists a constant force of gravity and it is usually more than an accelerating car. The only reason you don't feel gravity is because of the normal force between you and your bed. It directly opposes the force of gravity equally. Maybe read up on Newton's laws, specifically #2 and #1. tldr; net force in bed is 0, net force in accelerating car is more than 0.

Anonymous

Anonymous Sat 08 May 2021 00:17:23 No.13095779 Report

Quoted By:

>>13091968
It is exhilarating when you're in a sitting position. Take a sitting position now, and move your torso forwards and back. Pretty easy, right? Almost takes no effort at all. Now, go in a car that achieves 1g acceleration and you are being pushed to your seat like you were laying in bed. Trying to move your torso forward now is the same as doing a sit-up from your bed, it's a weird feeling.

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