what is conservation of energy?
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Conservation of energy, principle of physics according to which the energy of interacting bodies or particles in a closed system remains constant. The first kind of energy to be recognized was kinetic energy, or energy of motion.
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Conservation of energy, principle of physic according to which the energy of interacting bodies or particle in a closed system remain constant. When the pendulum swings back down, the potential energy. At all times, the sum of potential and kinetic energy is constant.
FORMULA
K1+U1 = K2+U2
K1= initial kinetic energy
U1= initial potential energy
K2= final kinetic energy
U2= final potential energy
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