Question $1$

$($a$)$ Consider the equation $L=L_0+a_0{t}^2+\frac{a_0{k}_0}{3}{t}^3+\frac{k_0{n}_0}{12}{t}^4,$ where $L$ is a length and $t$ is a time. What are the SI units of $($i$)k_0,$ and $($ii$)n_0?$

$\frac{1}{2}+\frac{1}{2}=1$mark