PHYSICS 5A Lecture Notes - Lecture 18: Momentum, Chemical Energy, Conservative Force
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Document Summary
Conservation of angular momentum - the principle that the total angular momentum of a system has constant magnitude and direction if the system is subjected to no external force. Origin of newton"s law and conservation law. Conservation law: states that a particular measurable property of an isolated physical system does not change as the system evolves over time. Meaning there must be conservation of energy, conservation of linear momentum, conservation of angular momentum, and conservation of electric change. Kinetic energy : the energy that the object possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Potential energy : the energy an object has because of its position, rather than its motion. E th -> thermal energy: contained in motion of atoms. Thermal energy: the internal energy of an object due to the kinetic energy of its atom/ molecules.