quick, fast
速 centers on high speed: being quick or fast in movement or action.
速 combines 辶 (movement) with 束, which likely contributes the sound and the idea of binding or tightening, suggesting swift, constrained motion.
The movement radical 辶 wraps around 束 (bundle). Picture a tightly bound bundle rolling downhill at high speed: 速 means quick or fast.
For ソク, imagine a sock flying off a foot at high speed: sock -> ソク, and the quick motion matches the kanji's meaning.
high-speed; rapid; express
speed; velocity; pace; rate
news flash; prompt report; bulletin; quick announcement
at once; immediately; without delay; promptly
acceleration; speeding up
rapid (e.g. progress)
(very) quick; rapid; swift; speedy; prompt; expeditious
swift attack; quick attack; fast break; breakaway
speed (per hour)
high speed; rapidity
quick; speedy; prompt; rapid; swift
deceleration
wind speed
stall
speed per second; velocity per second
full speed
express; special delivery
shorthand; stenography
fastball
speed
rough-and-ready; knocked-up; hasty; slipshod; slapdash
high speed
quickness; agility; activity
supersonic speed