SecretSoftware wrote:How fast is time? Can we calculate the rate of change of time?
According to the Relativety theory of Einstein, If we travel the same speed as light, the time will stop, if we travel faster than the light, the time will goes back,
The speed of light is 3*108(i.e 300000000) m/s in vacuum condition, that's about the speed of time I think.
Whereas
GMm/R2 = 1/2 mv2 =mg
v=gR1/2
This is the escape velocity if you on the earth, (R=radius of earth)
So if u reaches over this speed, you will be throw out of atmosphere.
No one can reaches the speed of light.
Ping Shen
