Suppose an 800-gram object is initially at point O on a potential energy diagram. The particle is initially at rest, and the diagram illustrates the variation in potential energy as the particle moves from O to P, and Q. Determine the speed of the particle when it passes through points (i) P and (ii) Q.

• A. ​(i) 3.16 m/s
  (ii) 0 m/s​
• B. (i) 3.34 m/s
  (ii) 2 m/s
• C. (i) 5.12 m/s
  (ii) 10 m/s
• D. (i) 6.184 m/s
  (ii) 6 m/s

Answer: (A)