A ball rolls off top of a staircase with a horizontal velocity u m/s. If the steps are h metre high and b metre wide, the ball will just hit the edge of nth step. Find the value of n. A ball rolls off top of a staircase with a horizontal velocity u m/s. If the steps are h metre high and b metre wide the ball will just hit the edge of nth step. Find the value of n. September 21, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) , Facebook Messenger WhatsApp Share this:TwitterFacebook Related