Thank you for reporting, we will resolve it shortly
Q.
A stone falls from a balloon that is descending at a uniform rate of $12\, m/s.$ The displacement of the stone from the point of release after $10\, s$ is
Solution:
$u=12\, m / s ,\, g =9.8\, \,m / s ^{2}, t=10\, s$
Displacement $=u t+\frac{1}{2} g t^{2}$
$=12 \times 10+\frac{1}{2} \times 9.8 \times 100=610\, \,m .$