Question

difine escape velocity and find its valu at earth surface ​

Answer 1

if any object is able to overcome the downward pull by the earth and can escape the earth forever and wil not fall back on the earth again . this is called escape velocity

V esc =under root 2GM/R

Answer 2

The velocity with which the particle is projected from the surface of earth such that it escapes away from the planet's gravitational force.

For earth out is 11.2 km/ s