Problem 2-1(c) Average Speed - Part 2 - C

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 $\mathrm{3.84 \times 10^5\; km.}$

Correct!

The length of the circumference of a circle is given by:

(A)   $\pi r^2$

(B)   $2 \pi ^r$

(C)   $4/3 \pi r^3$