| A | B |
|---|
| Rotation | Turns about an internal axis |
| Revolution | Turns about an external axis |
| Torque | Force x Lever arm distance |
| Centrifugal force | Center fleeing |
| Centripetal force | Center seeking |
| Angular momentum | Rotational inertia x rotational velocity |
| Gravitaional force | Obeys inverse square law |
| Parabola | Curved path followid by a projectile |
| Ellipse | Oval path followed by a satellite |
| Black hole | Concntration of mass resulting from gravitational collapse |
