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Rate of change of acceleration?

What is the name for rate of change an acceleration?

(P. Selvam asked)

Answer:

The rate of change of acceleration is called Jerk or Jolt

\vec j=\frac {\mathrm{d} \vec a} {\mathrm{d}t}=\frac {\mathrm{d}^2 \vec v} {\mathrm{d}t^2}=\frac {\mathrm{d}^3 \vec r} {\mathrm{d}t^3}
Just for info:
yank (symbol Y) has been suggested for rate of change of force, tug (symbol T) for rate of change of yank, snatch (symbol S) for rate of change of tug and shake (symbol Sh) for rate of change of snatch.
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