What is the value of escape velocity of a body lying on the surface of moon ? 

What is the value of escape velocity of a body lying on the surface of earth?

Define escape velocity

What is the escape velocity from a black hole ?

"The value of the escape velocity v_e for a stationary body on the surface of a planet is directly proportional to the mass and the radius of the planet”. Is this statement true? If not, correct it and write it.

Explain escape energy of body lying on the earth

When a body float on the surface of liquid ?

There is crater of depth R//100 on the surface of the moon (raduis R ). A projectile is fired vertically upwards from the crater with a velocity, which is equal to the escape velocity v from the surface of the moon. The maximum height attained by the projectile, is :

Derive the expression of escape velocity (esape speed) of a stationary body on the surface of earth.