What is the escape velocity on Earth?

1. 7.9 km/s
2. 9.8 km/s
3. 11.2 km/s
4. 12.4 km/s

Earth’s escape velocity, calculated using √(2GM/R), is approximately 11.2 km/s. This speed is required to break free from Earth’s gravitational influence without further propulsion, a benchmark for interstellar probes.