Tectonic plates are large segments of the Earth's crust that move slowly. Suppose that one such plate has an average speed

of $4\mathrm{.}4c\frac{m}{?}$ year.

$($a$)$ What distance does it move in $1s$ at this speed?

$m$

$($b$)$ What is its speed in kilometers per million years?

$k\frac{m}{?}$ million years