Question

What is gravity velocity escape?

Answer 1

You are perhaps referring to escape velocity.

It is defined as the minimum speed/velocity required for an object to escape the gravitational force influence of a massive body generally a planet.

For example:-

The escape velocity from Earth is about 11.186 km/s and for mars it is 5.0 km/s.

Answer 2

escape velocity is the velocity required to escape the gravitational pull of the Earth.on the surface of the Earth, the escape velocity is about 11.2 km/s