Émilie du Châtelet
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Gabrielle Émilie Le Tonnelier de Breteuil, Marquise du Châtelet was a French mathematician and physicist.
Emilie Chatelet portrait by Latour
The frontispiece to Voltaire's Elements of the Philosophy of Newton depicts du Châtelet above Voltaire, with light descending from Newton through her to Voltaire.
The Château de Cirey, where du Châtelet and Voltaire lived and worked together
The château of Lunéville
Kinetic energy
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In physics, the kinetic energy of an object is the form of energy that it possesses due to its motion.
Émilie du Châtelet
…experiment originally devised by Willem 's Gravesande in which heavy balls were dropped from different heights into a sheet of soft clay. Each ball's kinetic energy – as indicated by the quantity of material displaced – was shown to be proportional to the square of the velocity: She showed that if two balls were…
The cars of a roller coaster reach their maximum kinetic energy when at the bottom of the path. When they start rising, the kinetic energy begins to be converted to gravitational potential energy. The sum of kinetic and potential energy in the system remains constant, ignoring losses due to rolling resistance and drag.