Question

a freely falling object eventually stops on reaching the ground what happened to its kinetic energy​

Answer 1

$\huge\mathfrak\purple{Hello\:Mate}$❤

When it reaches the ground and comes to rest, its kinetic energy becomes 0.

Hope it helps uhh✌✌✌

Answer 2

It's kinetic energy observed in the form of (1)heat (2) sound and potential energy in the configuration of object and ground...
When a freely falling body eventually stops on reaching the ground, its kinetic energy appears in the from of: (i) heat (the body and theground become warmer due to collision). (ii) sound (produced due to collision of the body with the ground).