Q: 54 (NDA-II/2012)

A staircase has five steps each 10 cm high and 10 cm wide. What is the minimum horizontal velocity to be given to the ball, so that it hits directly the lowest plane from the top of the staircase? ig = 10 ms-2)
question_subject: 
Science
stats: 
0,56,48,40,8,56,0