What is the angular velocity of the Earth?
- A$\frac{2\pi}{86400} \text{ rad/s}$
- B$\frac{2\pi}{3600} \text{ rad/s}$
- C$\frac{2\pi}{24} \text{ rad/s}$
- D$\frac{2\pi}{6400} \text{ rad/s}$
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