At a certain altitude above a small asteroid

PHYSICS · Single correct · CBSE · Physics · Gravitation · Gravitation

Problem

At a certain altitude above a small asteroid, the escape velocity is

5.0\,\text{km s}^{-1}

. What is the speed of a satellite in a circular orbit at this altitude? (a)

7.1\,\text{km s}^{-1}

(b)

5.0\,\text{km s}^{-1}

(c)

3.5\,\text{km s}^{-1}

(d)

2.5\,\text{km s}^{-1}