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Physics course for non-specialists, LOPHISS Master's degree - History and Philosophy of Science, by Etienne Parizot / Year 2021–2022 Summary (session of February 8, 2022): Approximation of a (quasi-)universal time Classical mechanics within a Galilean frame of reference Notion of "vector" speed, force, acceleration... Notion of "work" Potential energy Kinetic energy Conservative and non-conservative (dissipative) forces Notion of gradient Forces deriving from a potential Conservation of energy