The iss orbits the earth at approximately 400,000m altitude. its mass is 419725 kg. the earth’s average radius and mass are 6.38e6m and 5.97e24kg. what is the orbital velocity of the international space station?

7.66 km/s

Explanation:

The force of gravity between the Earth and the ISS corresponds to the centripetal force that keeps the ISS in circular motion around the Earth:

where

is the gravitational constant

is the mass of the ISS

is the mass of the Earth

is the distance between the ISS and the Earth's centre (given by the sum of the Earth's radius, r, and the ISS altitude, h)

is the orbital velocity of the ISS

Re-arranging the equation and substituting numbers, we find the orbital velocity:

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2