Test your knowledge of kinetic energy and gravitational potential energy, elastic potential energy and work done with this ten-question physics quiz.

You CAN NOT have work done by gravity AND gravitational potential energy. This would be like having your cake and eating it too. You can either HAVE your cake, or you can EAT your cake.

You can't have work done by gravity AND a change in gravitational potential energy. You have to do it one way or the other. This means that the most important step in solving work-energy problems ...

For an example of gravitational potential energy, consider a book placed on top of a table. To raise the book from the floor to the table, work must be done, and energy supplied.

Gravitational potential energy is the energy an object has by virtue of its position above the surface of the Earth. When an object is lifted, work is done. When work is done in raising the height ...