Heat And Thermodynamics

A one $\mathrm{kg}$ block of ice at \(-1.5^{\circ} \mathrm{C}\) falls from a height of \(1.5 \mathrm{~km}\) and is found melting. The amount of ice melted due to fall, if \(60 \%\) energy is converted into heat is (Specific heat capacity of ice is \(0.5 \mathrm{~cal} \mathrm{~g}^{-1} \mathrm{~C}^{-1}\), Latent heat of fusion of ice \(=80 \mathrm{~cal~g}^{-1}\) )