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+//Example 2.2
+//See Figure 2.18
+//Part a - motion towards right
+x_0=4.70;//Initial position (km)
+x_f=6.70;//Final position (km)
+delta_x=x_f-x_0;//Displacement (km)
+printf('Displacement in part (a) = %0.2f km',delta_x)
+//Part b - motion towards left
+x_0_prime=5.25;//Initial position (km)
+x_f_prime=3.75;//Final position (km)
+delta_x_prime=x_f_prime-x_0_prime;//Displacement (km)
+printf('\nDisplacement in part (b) = %0.2f km',delta_x_prime)
+//Openstax - College Physics
+//Download for free at http://cnx.org/content/col11406/latest