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diff --git a/1958/CH1/EX1.1/Chapter1_example1.sce b/1958/CH1/EX1.1/Chapter1_example1.sce
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+clc
+clear
+//Input data
+d=180//Distance of satellite above the surface of earth in km
+t=90//Time taken to complete one revolution of the earth in minutes
+r=6400//Radius of the earth in kms
+
+//Calculations
+R=(r+d)*1000//Total distance in m
+T=t*60//Time in seconds
+v=(2*3.14*R)/T//Orbital speed in m/s
+a=(v^2/R)//Centripetal acceleration in m/s^2
+
+//Output
+printf('Orbital speed is %i m/s \n Centripetal acceleration is %3.1f m/s^2',v,a)