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 classic literature ?
Buck swung to the right, ending the movement in a plunge that took up the slack and with a sudden jerk arrested his one hundred and fifty pounds.
They felt the jerk as their brakes were hastily applied, the swaying of the little train, and then the crunching of earth beneath them, the roar of escaping steam as their engine ploughed its way on into the road bed.
said Dennis, indicating Dolly by the slightest possible jerk of his head:--'And to hand you over to somebody else.
The youth gave the leaders a powerful jerk, and they plunged aside, and re-entered the road in the position in which they were first halted.
She had a peculiar jerking movement of the body when she spoke, which caused the canary-coloured plume on her hat to jerk too.
Here the ape-man unloosed his grass rope from about his neck, and as Numa stood above the body of the boar, challenging head erect, he dropped the sinuous noose about the maned neck, drawing the stout strands taut with a sudden jerk.
Mukhorty lifted his head and then gave a sudden jerk.
The pony did not like it, sometimes so successfully resisting with spread, taut legs and mutinous head-tossings, as to overcome the jerk of the ropes, and, at the same time wheeling, to fall heavily on its side or to uprear as the pull on the ropes was relaxed.
With a second jerk she pulled him to his feet, and they went on.
Suddenly I saw a man almost under the animal's nose, and reined in with a jerk that came near setting the creature upon its haunches.
He writhed his hands together as he stood, and his features were in a perpetual jerk, now smiling, now scowling, but never for an instant in repose.
He advanced his own, slow, stealthy, tremulous in faithful reproduction, the tips of two fingers and the thumb pressed together and hovering above the glass for an instant--then the swift jerk back, after the deed.