A body of mass $m$ thrown horizontally with velocity $v$, from the top of tower of height $h$ touches the level ground at distance of $250m$ from the foot of the tower. A body of mass $2m$ thrown horizontally with velocity $\frac{v}{2}$, from the top of tower of height $4h$ will touch the level ground at a distance $x$ from the foot of tower. The value of $x$ is:

Q. A body of mass $m$ thrown horizontally with velocity $v$, from the top of a tower of height $h$ touches the level ground at a distance of $250\text{m}$ from the foot of the tower. A body of mass $2m$ thrown horizontally with velocity $\frac{v}{2}$, from the top of a tower of height $4h$ will touch the level ground at a distance $x$ from the foot of tower. The value of $x$ is

Q. A body is thrown horizontally with a velocity $\sqrt{2gh}$ from the top of a tower of height $h$. It strikes the level ground through the foot of the tower at a distance $x$ from the tower. The value of $x$ is

Q. A body of mass $m$ is projected horizontally with a velocity $v$ from the top of a tower of height $h$ and it reaches the ground at a distance $x$ from the foot of the tower. If a second body of mass $2m$ 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-