(a)[3]
Mass and time are two of the SI base quantities. State three of the others.
(b)
A sphere with radius $r$ is travelling at speed $v$ through air of density $\rho$. The resistive force $F$ on the sphere is described by $F = Br^2\rho v^k$ where $B$ and $k$ are constants with no units.
(b(i))[3]
State the SI base units that correspond to $F$, $\rho$ and $v$.
(b(ii))[2]
Use base units to find the value of $k$.