The relation for orbital velocity is

where h is the height of the satellite above the earth’s surface. Clearly, the smaller is the value of h, greater is the value of v and vice-versa. Hence satellite revolving close to earth has larger speed.

where h is the height of the satellite above the earth’s surface. Clearly, the smaller is the value of h, greater is the value of v and vice-versa. Hence satellite revolving close to earth has larger speed.