gen-briefly-explain-escape-velocity-and-one-common-misconception-d5ac

Briefly explain escape velocity and one common misconception about it.

## Escape Velocity **Escape velocity** is the minimum speed an object needs to break free from a celestial body's gravitational pull without any additional propulsion. For Earth, this is about 11.2 km/s (25,000 mph). ## Common Misconception Many people think you must maintain escape velocity throughout your journey to leave Earth. **This is false.** You only need to reach escape velocity at one moment. Once achieved, you can coast away even as you slow down, because gravity weakens with distance. This is why rockets don't have to travel at 25,000 mph continuously—they just need enough initial energy to overcome Earth's gravitational binding energy. In fact, real spacecraft often travel much slower but maintain thrust over time, which is more fuel-efficient than achieving escape velocity in one burst.