The force applied to an object moving in the horizontal direction varies with the position, as shown in the figure below. Calculate the work done on the object i) between 0 cm and 2.5 cm, ii) between 2.5 cm and 10 cm, and iii) between 10 cm and 15 cm.  

• A. i) 0 J; ii) 0.3 J; iii) -0.3 J
• B. i) 0.05 J; ii) 0.26 J; iii) 0.13 J
• C. i) 0 J; ii) 3 J; iii) -3 J
• D. i) 5 J; ii) 26 J; iii) 15 J

Answer: (B)