A book was tossed up with an initial speed of 6.5 m/s on an inclined plane. The inclined plane makes an angle of 32° with the horizontal axis shown in the figure below. Ignoring friction, calculate the time it takes for the book to return to its initial position.

• A. 0.78 s
• B. 1.2 s
• C. 1.6 s
• D. 2.5 s

Answer: (D)