jerk

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jerk

[jərk]
(mechanics)
The rate of change of acceleration; it is the third derivative of position with respect to time.
A unit of rate of change of acceleration, equal to 1 foot (30.48 centimeters) per second squared per second.
References in periodicals archive ?
Angelo starts off innocently, merely jerking off on the doctor's face, the only part of his body that is not encased in the iron lung.
But he is shrugging off rumours that he has financial problems and, while he is refusing to talk to the media about speculation, he wants to send a message: "As Sinatra said 'while the press are jerking off, we're buying yachts'.
But then these guys start telling me, 'No, no, no, you can take it too, and it's like you were 14 and jerking off six times a day.