The total energy in a system is 675 J. The kinetic energy changes from 296 J to 432 J. Which statement best describes the potential energy of this system?

The total energy stays at 675 J, so potential energy equals total energy minus kinetic energy. Initially, it is 675 − 296 = 379 J; afterward, it is 675 − 432 = 243 J. Therefore, the potential energy changes from 379 J to 243 J.

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