Question

An iron ball and a wodden ball of same radius are released in vacuum wht is the time taken by both of them to reach ground

Answer 1

the gravity act same on both
and also if there is any air dragging force will also act same on both because of their same dimensions

and time to reach the ground is independent of their weight

so the time will be same for both

Answer 2

it would take the same time as mass of both are not proportional to speed in vacuum