jerk

“Although English-speaking engineers use the name ‘jerk’ to designate a unit rate of change of acceleration, i.e., the ft/s³, no name has hitherto been given to the corresponding unit in the metric systems, nor has the name ‘jerk’ been recognized by the ISO.”

H. S. Hvistendahl.
Engineering Units and Physical Quantities.
London: Macmillan and Co., 1964.

Page 30.

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