| A | B |
|---|
| Kinetic energy | Energy of motion. |
| Potential energy | Energy of position. Stored energy. |
| Work energy theorm | W = KE , Fd = 1/2mv^2 |
| Gravitational potential energy | Depends upon weight of a body and its seperation from Earth. |
| Total mechanical energy | PE + KE |
| Elastic collision (Bounce) | Collision where momentum and KE is conserved (if perfectly elastic). |
| Inelastic collision (Stick) | Collision where momentum is conserved, but total KE is usually decreased due to friction |
| Closed system | no objects enter the system |
| Isolated system | no outside forces act on the system |
| Energy conservation | In a closed isolated system energy does not change. |
| Formula for energy conservation | PEi + KEi = PEf + KEf |
