Answer
$8\ m/s^2$
Work Step by Step
We have:
speed of earth $v=7.49\times 10^3 \ m/s$
mean radius $r =7010\times 10^3\ m$
Therefore:
centripetal acceleration $a =\frac{v^2}{r}$
$a=\frac{(7.49\times 10^3 \ m/s)^2}{7010\times 10^3\ m}$
$a = 8\ m/s^2$
