Explain what happens to the energy of a rock on the edge of a cliff as it falls from the cliff (blank 1). Explain what happens to that energy as it hits the ground below (blank
2).
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AZ

Which of the following best describes internal energy? a. the difference between the kinetic and potential energies of the particles in a system b. the sum of the kinetic and potential energies of the particles in a system c. the sum of the kinetic and thermal energies of the particles in a system d. the difference between the kinetic and thermal energies of the particles in a system