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// Example 2.1, page no-36
clear
clc
r1=6370 //Earth's Orbit in km
r2=630 //Height of satellite from surface in km
G=6.67*10^-11// Gravitational constant inNm^2/kg^2
M=5.98*10^24 //Mass of earth in kg
R=r1+r2
v=sqrt(G*M/(R*10^3))
printf("The velocity of sattelite %.2fkm/s",floor(v/10)*10^-2)
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