Category: speed...

Although normally unaware of it, we too are spinning and moving at the same speed as the Earth, but we are held securely on the surface by the gravitational attraction of the mass of rocks beneath us.
learning to speed-read or speed-clean
lowering your speed to lower your stress
observing the speed limit
Excessive speed gets one nowhere. (Chinese proverb)
Wisely and slow. They stumble that run fast. (Shakespeare)
the rate of motion, or equivalently the rate of change in position
a brisk walk is defined as 3.5-3.75 mph