1. Measure and mark with tape flags distances of 15, 25, and 35 cm on the wooden board as shown in Figure 12. Figure12. Wooden board on incline with tope flogs indicating 15, 25, and 35 cm. 1. Rest the end of the board where you started your distance measurements on a single textbook (smallest angle of incline). 2. Measure the angle using the angle measurement device and record to 0.1 degrees in Data Table 2. 3. Rest the marble in the central groove at the top of the ramp. 4. Release the marble and simultaneously start the stopwatch. 5. Stop the stopwatch when the marble passes the 15 cm mark. Record the time to 0.01 seconds in Data Table 2