A 100 g of iron nail is hit by a 1.5 kg hammer striking at a velocity of $60 \mathrm{~ms}^{-1}$. What will be the rise in the temperature of the nail if one fourth of energy of the hammer goes into heating the nail? [Specific heat capacity of iron $\left.=0.42 \mathrm{Jg}^{-1}{ }^{\circ} \mathrm{C}^{-1}\right]$