| A | B |
| potential energy | stored energy, energy in waiting. |
| gravitational energy | the energy of position. |
| calorie | the amount of heat energy needed to raise the temperature of 1 kg of water 1o C. |
| joule | the amount of energy needed to raise the temperature of 1 g of water 4.18o C. |
| kinetic energy | energy in motion. |
| work | is done when force moves an object. |
| force | is push or pull applied to an object. |
| newton | unit of measure of force. |
| meter | unit of measure of distance |
| joule | unit of measure of work. |
| resistance forces | the forces that resist motion. |
| gravity | the force of the Earth’s downward pull, resists upward movement. |
| friction | a force that acts against other forces, resists movement in all directions. |
| lubricants | fluid placed between surfaces. |
| effort forces | the forces exerted on an object to get it to move. |