When people measure appliances such as shelves, benches, chairs, walls, windows, and other things, they are measuring just like the way people measure roller coasters.
One last example of potential or stored energy and kinetic or energy of motion could be the water sitting behind a dam. It's potential because the water is being stored behind the dam. If something terrible happened, like an earthquake, the dam could probably loosen up and eventually crack and break. When the water is out of the dam, it will be converted to kinetic energy or the energy of motion because the water is in motion.
One last example of potential or stored energy and kinetic or energy of motion could be the water sitting behind a dam. It's potential because the water is being stored behind the dam. If something terrible happened, like an earthquake, the dam could probably loosen up and eventually crack and break. When the water is out of the dam, it will be converted to kinetic energy or the energy of motion because the water is in motion.