system
Given the following post, respond as if you're commenting on Reddit:
human
[Flash/Quicksilver] Does regular running speed affect super speed?

For example, if Usain Bolt and an average person both got super-speed, would Bolt be faster? If he would, then is the speed additive or boosted by a factor? Sticking with the example, would Bolt be \~20 mph faster, or would his speed increase proportionally to the other guy?
gpt
Flash gets his powers from the Speed Force and Quicksilver gets his powers from the High Evolutionary’s genetic experiments. There’s no reason to think their normal human speed had any impact on the outcome.