Mechanics → Appendix: Units, Constants, and Reference Data → Important Physical Constants
Important Physical Constants
| Constant |
Symbol |
Value |
| Gravitational constant |
$G$ |
$6.67 \times 10^{-11} \, \text{N·m}^2/\text{kg}^2$ |
| Acceleration due to gravity |
$g$ |
$9.8 \, \text{m/s}^2$ |
| Speed of light |
$c$ |
$3.0 \times 10^8 \, \text{m/s}$ |
| Planck’s constant |
$h$ |
$6.63 \times 10^{-34} \, \text{J·s}$ |