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Which of the following shows kinetic energy being converted into potential energy?

A.a boulder rolling across the ground. B.a rock being tossed high into the air. C.a boulder falling off the edge of a cliff. D.a rock sitting in the grass.

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B. a rock being tossed high into the air.

It has kinetic energy as it goes upward, but as gravity slows it down, the kinetic energy is being converted into potential energy as it reaches the top of it's arc. The potential energy then starts to be reconverted back into kinetic energy as it starts to descend along it's arc.

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B, but I also forgot what potential energy was so...

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C. A boulder falling off the edge of a cliff. Potential energy is often referred to as energy of position while kinetic energy is referred to as energy in motion. When it is poised at the top of the cliff it has potential energy. As it begins to fall its kinetic energy increases while its position, or potential energy, decreases.

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A boulder falling off the edge of a cliff shows kinetic energy being converted into potential energy. Kinetic energy involves energy, which an object possesses due to its motion, while potential energy is the energy of an object.

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