contestada

A rocket is launched from the surface of earth with a speed v0 that will allow the rocket to escape the gravitational field of earth. the same rocket is now launched from a different planet with the same mass as earth and four times the radius of earth. which of the following is a correct expression for the escape speed from the surface of the new planet? responses
Select one :
0.5 Vo
2 Vo
0.25 Vo
0.71 Vo
Vo