Ch. 3: Motion in One Dimension
Reading
BJU Physics, Ch. 3
AP Classroom: Unit 1 "Kinematics"
Topics
Labs
BJU Physics, Ch. 3
AP Classroom: Unit 1 "Kinematics"
Topics
- Displacement, speed, velocity, and acceleration
- The "Big Five" equations of motion
Labs
- Galileo's Inclined Plane lab. Instructions below. Remember to bring the lab handout to class!
- Skate Park weblab. Instructions below.
Lecture video
The "BIG FIVE" Equations
Lecture outline:
Velocity
vavg = (x2 – x1) / (t2 – t1)
Acceleration
aavg = (v2 – v1) / (t2 – t1)
Velocity
- Velocity indicates how your location changes with time. It is distance divided by time, as in “miles per hour” or “meters per second”
- We write the formula as follows:
vavg = (x2 – x1) / (t2 – t1)
Acceleration
- Acceleration indicates how your velocity changes with time.
- Positive acceleration means "speeding up". Negative acceleration (i.e. deceleration) means "slowing down".
- We use units of "meters per second per second" or "meters per second squared".
- We write the formula as follows
aavg = (v2 – v1) / (t2 – t1)
Greek Alphabet assignment
We use the Greek alphabet in Physics. Write-out the entire Greek alphabet, both capital letters and lower case letters (make it look professional!). Include the letter’s “names”. All this can be found in the appendix of your book. Next, write out John 1:1-5 in the original Greek (5 verses total) https://www.biblegateway.com/passage/?search=John%201&version=TR1550 . Write a short essay explaining what is meant by the “Logos” as it is used in this passage.
We use the Greek alphabet in Physics. Write-out the entire Greek alphabet, both capital letters and lower case letters (make it look professional!). Include the letter’s “names”. All this can be found in the appendix of your book. Next, write out John 1:1-5 in the original Greek (5 verses total) https://www.biblegateway.com/passage/?search=John%201&version=TR1550 . Write a short essay explaining what is meant by the “Logos” as it is used in this passage.
Galileo's Inclined Plane lab
Remember to bring the lab handouts.
Galileo Lab, part 1
Turn in by the due date: 1) table with raw data, and 2) distance-vs-time plot with 3 best-fit curves, all labeled, 3) your name and date, and 4) the title of the lab. I expect to see professional-looking work.
Galileo Lab, part 2
Turn in by the due date: 1) Your 3 best-fit curves showing 3 tangent lines and 3 triangles, 2) your 3 computations using Big Five #5, and 3) your computation of the acceleration due to gravity "g" for all 3 runs, the average value, the % error, and your explanatory comments. I expect a professional-looking final report.
Remember to bring the lab handouts.
- In this lab exercise we reproduce Galileo's famous inclined-plane experiment using a modern Vernier cart and track set at 3 different angles.
- This is exactly what Galileo did using a bronze ball and wooden track with a groove down the middle. Galileo, however, didn't have a movie camera with an electronic timer; his "clock" was allowing water to drip into a container and then weighing the container!
- Our goal is to estimate 'g', the acceleration due to gravity on planet Earth, and compare with the known value of 9.8 m/sec^2.
Galileo Lab, part 1
Turn in by the due date: 1) table with raw data, and 2) distance-vs-time plot with 3 best-fit curves, all labeled, 3) your name and date, and 4) the title of the lab. I expect to see professional-looking work.
Galileo Lab, part 2
Turn in by the due date: 1) Your 3 best-fit curves showing 3 tangent lines and 3 triangles, 2) your 3 computations using Big Five #5, and 3) your computation of the acceleration due to gravity "g" for all 3 runs, the average value, the % error, and your explanatory comments. I expect a professional-looking final report.
| galileo_lab__part_1_lab handout_-_graphs_and_raw_data_table |
| galileo_lab__part_2_lab handout_-_final_lab_report |
Use this graph paper: http://www.printfreegraphpaper.com/gp/e-i-110.pdf
"Skate Park" weblab
Follow the instructions in the handout below. Upload your completed work to Canvas by the due date.
Online Curve Fitting Calculator: elsenaju.eu/Calculator/online-curve-fit.htm
Follow the instructions in the handout below. Upload your completed work to Canvas by the due date.
Online Curve Fitting Calculator: elsenaju.eu/Calculator/online-curve-fit.htm
| 1._skate_park_weblab__rev_2023_.docx |