Physics Question from JEE Main 2023 · 13 April, Shift 2

A car accelerates from rest to $u \, \text{m/s}$. The energy spent in this process is $E \, \text{J}$. The energy required to accelerate the car from $u \, \text{m/s}$ to $2u \, \text{m/s}$ is $nE \, \text{J}$. The value of $n$ is _____.