Physics
posted by Nikita .
A satellite orbits at an average altitude of h = 409 km. What is its orbital speed? Use REarth = 6370 km and
mEarth = 5.98 x 10^24 kg

set centripetal force = gravitational force
GMm/(r+h)^2=mv^2/(r+h)
v= 2PI (r+h)/24hrsinSeconds
change all kilometers to meters. Watch units. 
can you please explain the v=...part i don't understand what you mean by 24hrsinseconds?

is GMm gravity (9.81) multiplied by the mEarth?