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+// Example 2_10
+clc;funcprot(0);
+// Given data
+theta_i=30;// degrees
+r=25*10^4;// ft
+rdot=4000;// ft/sec
+theta=0.80;// deg/sec
+g=31.4;// ft/sec^2
+
+// Calculation
+v_r=rdot;// ft/sec
+v_theta=r*(theta*%pi/180);// ft/sec
+v=sqrt(v_r^2+v_theta^2);// ft/sec
+a_r=-g*cosd(theta_i);// ft/sec^2
+a_theta=g*sind(theta_i);// ft/sec^2
+rdotdot=a_r+(r*(theta*(%pi/180))^2);// ft/sec^2
+thetadotdot=(a_theta-(2*rdot*theta*%pi/180))/r;// ft/sec^2
+printf("\nThe velocity of the rocket,v=%4.0f ft/sec \nrdotdot=%2.1f ft/sec^2 and thetadotdot=%1.2e rad/sec^2",v,rdotdot,thetadotdot);