if the earth is flat and it accelerate with 9.8 m/s^2  then it means we are traveling with a very big speed up , wich is much bigger than the speed of ligh wich cant be  hit so it doenst make any sense  , and why are we accelerating ?

quote from wiki:Due to special relativity, this is not the case. At this point, many readers will question the validity of any answer which uses advanced, intimidating-sounding physics terms to explain a position. However, it is true. The relevant equation is v/c = tanh (at/c). One will find that in this equation, tanh(at/c) can never exceed or equal 1. This means that velocity can never reach the speed of light, regardless of how long one accelerates for and the rate of the acceleration.


this doesnt make any sense