A particle is thrown vertically upwards from the surface of earth and it reaches to a maximum height equal to the radius of earth. The ratio of the velocity of projection to the escape velocity on the surface of earth is

A particle is throws vertically upwards from the surface of earth and it reaches to a maximum height equal to the radius of earth. The radio of the velocity of projection to the escape velocity on the surface of earth is

The escape velocity of a body from the surface of earth is

A body projected from the surface of the earth attains a height equal to the radius of the earth. The velocity with which the body was projected is

A particle falls on earth : (i) from infinity. (ii) from a height 10 times the radius of earth. The ratio of the velocities gained on reaching at the earth's surface is :

A particle is thrown with escape velocity v_(e) from the surface of earth. Calculate its velocity at height 3 R :-

A body is projected vertically upward from the surface of the earth, then the velocity-time graph is:-

A particle is projected vertivally upwards from the surface of earth (radius R_e) with a kinetic energy equal to half of the minimum value needed for it to escape. The height to which it rises above the surface of earth is ……