Question

A body of mass m is projected horizontally with a velocity v from the top of a tower of height h it reaches the ground at a distance x from the foot of the tower. If a second body of mass m is projected horizontally from the top of a tower of height 2h, it reaches the ground at a distance 2x from the foot of the tower.The horizontal velocity of the second body is :( answer should come √2v )

Answer 1

I have explained the answer with diagram in the photo.