Question

consider a two - object system: a magnet and a launcher. when the launcher is released, the potential energy drops and kinetic energy rises. which explanation best describes this change?
kinetic energy was destroyed as potential energy increased
potential energy converted into kinetic energy as the system changed
the system lost all its energy to the surroundings
the force stored in the magnet prevented energy conversion

Explanation:

This follows the law of conservation of energy, which states energy is neither created nor destroyed, only converted between forms. As the launcher moves, stored potential energy (from the magnetic interaction) is transformed into the motion energy (kinetic energy) of the launcher, matching the observed drop in potential energy and rise in kinetic energy.

Answer:

B. Potential energy converted into kinetic energy as the system changed