Question

Given that the radius of earth is 6400km and g= 9.8 calculate the escape velocity

Answer 1

Escape velocity is the velocity with which an object can just escape from the gravitational force of the earth.

Formula - V = √(2gR)

    V = √2(9.8)(64 X 10⁵)

    V = √125.44 X 10⁶

    V = 11.2 X 10³ m /s

    V = 11.2 km/s