Physics - Kinematics Question with Solution | TestHub

A man in a balloon throws a stone downwards with a speed of $5 \mathrm{m} {\mathrm{s}}^{-1}$ with respect to the balloon which is moving upwards with a constant acceleration of $5 \mathrm{m} {\mathrm{s}}^{-2}$. Find the velocity (in $\mathrm{m} {\mathrm{s}}^{-1}$) of the stone relative to the man after $2 \mathrm{s}$. (Take $\mathrm{g}=10 \mathrm{m} {\mathrm{s}}^{-2}$)