Question

Can someone help me with the questions below? its a 7th grade question I need help with.

Answer 1

Answer:

A person jogging on a sidewalk {×}

An apple hanging on a tree {✓}

A ball being thrown {×}

A rock on top of a mountain {✓}

An airplane in flight {×}

A stretched rubber band {×}

A spring that is wound {✓}

A book on a bookcase {✓}

NOTE:

• The precise point is that gravitational energy is potential energy unless it makes something move, and then the energy is converted to kinetic energy, no work can be done.

hope it helps