Question

A stone is falls from a balloon . That is descending at uniform rate of 12m per sec. The displacement of the stone from the point of realese after 10 seconds.

Answer 1

The point of release is a point in the air, not attached to the balloon.Since speed of balloon has same direction as acceleration due to gravity,
u = 12m/s
 a=9.8 m²/s
 t=10s

s = ut  +  1/2at²
s= 12(10)+1/2(9.8)(10)²
s=120+1/2(9.8)(100)
s=120+1/2(980)
s=120+490
s=610m

Answer 2

$hy \: dear$