physics
posted by joselyne .
The Earth’s radius is about 6380 km. The
space shuttle is orbiting about 300.1 km above
Earth’s surface.
If the average speed of the space shuttle is
25700 km/h, ﬁnd the time required for it to
circle Earth.
Answer in units of h

Radius of the orbit R = 6380 + 300.1 km
The circumference of the orbit is
C = 2(Pi)R km
The period of the orbit is then
P = 2(Pi)R/25,700 km/hr