Suppose that the millennium falcon orbits the death star 20,000m above the star’s surface. calculate the circular orbit velocity in m/s

18.4 m/s

Explanation:

The gravitational force between the Death Star and the Millenium Falcon is equal to the centripetal force that keeps the Millenium Falcon in circular orbit:

where

is the gravitational constant

is the mass of the planet

is the mass of the Millennium Falcon

is the orbital velocity of the Millennium Falcon

is the radius of the Death Star

is the altitude of the Millennium Falcon above the planet's surface

Solving the equation for v, we find the orbital velocity:

we need to know the time interval during which the force acts. impulse of force = momentum change

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