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 ball A of mass m falls on the surface of the earth from infinity. Another ball B of mass 2m falls on the earth from the height equal to six times the radius of the earth. Then ratio of velocities of A and B on reaching the earth is sqrt(x//y) where x and y are coprimes. Find x+y .

A ball A of mass m falls on the surface of the earth from infinity. Another ball B of mass 2m falls on the earth from the height equal to six times the radius of the earth. Then ratio of velocities of A and B on reaching the earth is sqrt(x//y) where x and y are coprimes. Find x+y .

A stone is dropped from a height equal to 3R , above the surface of earth. The velocity of stone on reaching the earth's surface 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

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