relation Gravity, Speed and Durability

[Antoniofer]

how high should be the gravity to make that a persona who can move to Mach 9 in normal gravity (9.8 m/sˆ2) make it to move at a normal speed of a normal people? also, what should be the durability of that person who can support that increased gravity for a long time?

 

[DontTalk]

"how high should be the gravity to make that a persona who can move to Mach 9 in normal gravity (9.8 m/sˆ2) make it to move at a normal speed of a normal people?"

Quite hard to say. In a frictionless enviorment (like is assumed for most stuff) gravity and horizontal speed have no relationship. In practice there is one through friction and because it gets harder for the character to run, but it is hard to quantify.

EDIT: If we would talk about acceleration one could estimate that by taking into account that the person has to use force to counteract the stronger gravity (assuming flight in this), but given that stuff in fiction rarely accelerates and that we usually search for feats that usually doesn't matters.

"what should be the durability of that person who can support that increased gravity for a long time?"

Quite certain that one can not calculate that. Durability wise that has something to do with tidal force and/or pressure I believe, but that are units of force or force/area and not the energy we usually search for in order to determine durability.

A smaller character is also less effected than a larger one.

 

[Antoniofer]

ˆSo, aren't there a formula to relate these three elements to determinate stats?

 

[DontTalk]

See edit. The problem is that we talk about force here. and force usually implys acceleration not constant speed like fiction has.

Someone flying would for example not be affected until he crashes into the ground. If he doesn't want that he has to counteract earth acceleration through some of the force he usually uses to move. But that would just mean that e needs longer to reach top speed, not that the top speed is slower. At least that is what I would spontanously think. If someone wants to research and correct me that is fine as well.