Question

a ball rolls off the top of a stair case with a constant horizontal velocity u. if each step is h metre high and w. metre wide then show that the ball will hit the edge of nth if n= 2hu^2/gw^2​

Answer 1

Answer:

A mass m is left to fall freely to fall from a height R / 3 from the surface of Earth. What is its velocity when it hits the surface of Earth.: