It seemed to her that some destroyer was moving soundlessly through the country and the lights were dying at his touch-someone, she thought bitterly, who had reversed the principle of the Twentieth Century motor and was now turning kinetic energy into static.
There are no more uses of "kinetic energy" in the book.
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The pendulum repeatedly converts potential energy to kinetic energy and then back.
His heart still pounded its familiar, steady rhythm, but the blood being pushed through his veins seemed to thrum under her touch with the kinetic energy of a fire just about to catch.