# Problem 2-1(c) Average Speed

Determine the average speed in metres per second. Express the final answer in scientific notation using the correct number of significant digits.
(C) The moon takes $27.3$ days to complete one orbit around the earth. The average earth-moon distance is $\mathrm{3.84 \times 10^5\; km.}$

The average distance from the earth to the moon is:

(A)  The radius of the orbit.

(B)  The diameter of the orbit.

(C)  The circumference of the orbit.