Question

What is escape velocity ? Prove that escape velocity from the surface of earth is 11.2 km/sec?

Answer 1

Escape velocity is the speed that an object needs to be travelling to break free of planet or Moon's gravity well and leave it without propulsion.

and I don't know the prove friend ....

Answer 2

11.2 km/s

Explanation:

Escape velocity is independent of mass of object being escaped

Escape velocity is given by

v = √[(2GM)/R]

Where

v = Escape velocity

G = Universal gravitation constant

M = Mass of Earth