-// motor prumer 17.7, delka 69.5
-// tycka prumer 3.4 mm
+// The Estes A8-3 and C6-7 motors have diameter of 17.7 mm,
+// length 69.5 mm. The Estes Alpha launch pad has rod diameter 3.4 mm.
eps = 0.01;
+infty = 1000;
+
r_vect = [
25, 25, 25, 24.95, 24.8, 24.7,