A catapult is used to project a stone. Which of the following energy conversions takes place as the stone is released?
- The kinetic energy of the stone is converted into gravitational potential energy
- The gravitational potential energy of the catapult is converted into kinetic energy of the stone
- The gravitational potential energy is converted into elastic potential energy
- The elastic potential energy of the catapult is converted into gravitational potential energy of the stone
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None of the above
