spindown
reduction drive
deceleration
retardation
underclocking
backspin
reduction gear
damper
gear
torque converter
geared wheel
gear wheel
cogwheel
spooldown
aerobraking
curl
time dilation
meno mosso
spinning
slingshot effect
rattleback
Lorentz-Fitzgerald contraction
yo-yo despin
pseudospinor
groundspeed
rate limiter
pseudospintronics
spinlessness
closing speed
nonrelativistic mechanics
Bubnoff unit
button
precession
bat
retrorocket
magnetoelectronics
whirl
delta-v
spin control
twisting
law of equal areas
decelerated motion
law of areas
uniformly decelerated motion
speedlessness
twist
Oberth effect
spin
twirl
Kepler's second law