Question

What is an example of "potential energy"?

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the energy that moves a rollercoaster car as it rolls downhill on the tracks
the energy that is exerted on a brick wall after a car hits it
the energy stored in a wrecking ball after lifting it in the air above the ground
the energy that is used to move a baseball over the fence of a baseball field
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Answer 1

A heavy ball of demolition machine is storing energy when it is held at an elevated position .