On a hypothetical planet when a ball is thrown vertically up

Last updated: 6/10/2023

On a hypothetical planet when a ball is thrown vertically up with speed u from the top of a tower of height H it takes 18 second to reach the ground If the same ball is thrown down with same speed u from there it takes 8 seconds to come down Now if the same ball is released from rest from the tower top the time taken by it to reach the ground is 1 13 second 2 12 second 3 14 second 4 11 second