Question

a ball rolls horizontally off a table of height 0.6m with a speed of 9m/s how long does it take the ball to reach the ground

Answer 1

It takes 0.35 second.

Through horizontal speed doesn't matter.

Answer 2

it will take 0.35 s to move off

Step-by-step explanation:

As we know that the ball rolls horizontally on a table of height 0.6 m

so here we can say that in vertical direction the motion is free fall under gravity

so we can say

`y = (1)/(2)gt^2`

`0.6 = (1)/(2)(9.8)t^2`

here we will have

`0.6 = 4.9 t^2`

`t = 0.35 s`