A staircase contains three steps each 10 cm high and 20 cm wide figure. What should be the minimum horizontal velocity of a bal rolling off the upper most plane so as to hit directly the lowest plane?

A staircase contains four steps each 20 cm high and 40 cm wide. What should be the minimum horizontal velocity of a ball rolling off the uppermost plane so as to hit directly the lowest plane ?

A staircase contains three steps each 10 cm high and 20 cm wide as shown in the figure. What should be the minimum horizontal velocity of a ball rolling off the uppermost plane so as to hit directly the edge of the lowest plane ? [g=10 m//s^(2)]

A staircase contains four steps each 10 cm high and 20 cm wide. The minimum horizontal velocity of a ball rolling off the uppermost plane so as to hit directly the lowest plane is

A stair case contains ten steps each 10cm high and 20 cm wide. The minimum horizontal velocity with which the ball has to be rolled off the upper most step, so as to hit directly the edge of the lowest steps is (approximately)