The first cosmic velocity (orbital velocity at Earth's surface) is app…

Question

The first cosmic velocity (orbital velocity at Earth's surface) is approximately:

Accepted Answer

C. 7.9 km/s

v_orb = √(gR) ≈ 7.9 km/s for low Earth orbit.
*Note: v_esc = √2 × v_orb.*

Answer

9.8 km/s

Answer

11.2 km/s

Answer

42 km/s

The first cosmic velocity (orbital velocity at Earth's surface) is approximately: