A ball rolls off the top of Stairway horizontally with a velocity of 4.5 M per second each step is 0.2 M and 0.3 M wide if she is 10 M per second square then the ball will strike the end step Where n is equal to?
Considering that here
so,we have a projectile projected from height
So,we can say if it took time
And,along horizontal direction, using