PART 2. Object moving toward the motion sensor.

Run 3. Position the cart at the right end of track, give it a light push toward the sensor (or use V0? set to # 3) and record its motion. Open a new file in Logger Pro, copy/paste the position data. (Use option in KET “Copy to clipboard”). Apply linear fit to the relevant portion of the new plot of position vs. time (where the cart was moving). Record the slope value and its uncertainty. How the value of the slope compared to the one in Run #1.

Write the equation of the cart’s motion (5) using the value of the slope as the true value of the average velocity.

Run 4. Record yet another run with cart moving towards the motion sensor but faster than in run 3. If necessary you may use V0? set to # 4. Copy the data to the same file in Logger Pro as a new data set. Add the new set of points to the position vs. time display. Apply linear fit to the relevant portion of the plot for run 4 and find cart’s velocity. Write the equation of the cart’s motion (5) using the value of the slope as the true value of the average velocity.

Save the Logger Pro file for future reference.

Organize your Logger Pro graph windows so they fit on one page, capture the screen and paste it into a Word file – you will have to attach it to your lab report.

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