Escape speed for a rocket is greatest from
A)Earth.
B)the Moon.
C)the Sun.
D)same for each

Question

Quizplus · Accepted Answer

The escape speed is the minimum speed needed to escape the gravitational pull of a celestial body. The escape speed from any body is directly proportional to the mass of the body and inversely proportional to its radius. Therefore, the escape speed is greatest from the body with the largest mass and smallest radius, which in this case is the Sun.

Escape Speed for a Rocket Is Greatest from