The Physics
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Opus in profectus

Centripetal Force

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Summary

Ways to accelerate
A force that is… will make a moving object… or…
parallel to velocity change speed (speed up) accelerate (in the usual sense of the word)
antiparallel to velocity change speed (slow down) decelerate (which is just another way to accelerate)
perpendicular to velocity change direction (turn) accelerate centripetally (which is also just another way to accelerate)