PART 4. Motion with known velocity.

Run 6. Set the known velocity V0 to – 20 cm/s (negative 20 cm/s). Position the cart in the middle of the track. Predict by calculation (use eqn. 1) the final position of the cart after 3 s from the moment it crosses the 80 cm mark on the track. Show all your calculations in Data Analysis. Turn on the motion sensor and press “Go➔” button situated next to V0 . Use data from the Data Table to check your prediction.

Capture the screen and paste it to a Word file - you will have to attach it to your lab report.

In the Discussion Section briefly explain the theory concept that was tested. Then explain how the experimental results support/or not the theoretical concept. All questions from the lab manual should be answered in the narrative form. DO NOT write the discussion in Q&A format.

For part 1 and 2, based on your experimental data distinguish the term distance/displacement/ speed/velocity. How well do the two instantaneous velocities compare to the average velocity?

Can you conclude that during time interval t1 → t2 the cart was moving with constant velocity?

What graphical attributes can you use to find direction of motion, speed, constant velocity, and magnitude of velocity from both position vs. time and velocity vs. time graphs? In run 2 how different is the shape of position vs. time graph in comparison to run 1?

Describe in details how did you need to move the cart along the track in order to reproduce the graph shown in the position vs. time display of Part 3.

What caused any discrepancy in the predicted and experimental positions of the cart in part 4 of the lab?

Make a conclusion if the objective(s) of the lab has been achieved based on the final experimental results.

lab-manualconstant-velocity-motion-in-one-dimension