Key Terms
Key Terms
Section titled “Key Terms”| Keyword | Definition | Unit / Symbol |
|---|---|---|
| Mass (m) | The amount of matter in a body. Constant everywhere. | Kilogram (kg) |
| Weight (W) | Force of gravity acting on a mass. Depends on location. | Newton (N) |
| Density (ρ) | Mass per unit volume of a substance. | kg/m³ or g/cm³ |
| Volume (V) | Space occupied by an object or substance. | m³ or cm³ |
| Buoyancy | Upward force exerted by a fluid on a submerged object. | Newton (N) |