how fast is it.........

if a small plane with glide ratio 7:1
glide ratio 7:1 means plane moves forward 7 feet
for every 1 foot altitude (height) lost.

so if a plane at 10000 feet in air has its engine shut off.
how fast will it be moving forward when the plane touches the ground.

the basic question was you start at a still plane
not moving forward, not goin up not coming down.
still frozen in air.  10,000 feet in the air.
with a glide ratio of 7:1 what is glide ratio is already explained.  what speed would it hit the ground.
again there is no drag, there is no cross winds,
weight wouldn't matter because of glide ratio.
angle is not important again glide ratio.
distance only height is important.
all the random factors have been taken out of the question.

just needed to know what speed it will hit the ground when it lands. in Km/Hr.