Answer
1047.19 miles/ hour
Work Step by Step
Given that diameter of earth = 8000 miles
As we know that circumference of earth = ${2πr}$ => ${(2r) π}$ = ${Dπ}$
Time Period (One complete rotation) of earth= 24 Hrs
Speed formula = $V = \frac{s}{t}$ ........ (1)
Putting Values in (1), we get $v= \frac{8000π miles}{24hrs}$
solving we get, $V= 1047.19 \frac{miles}{hour}$
