U1D5, Lecture: Gravitational Potential Energy Homework Due: Work-KE Theorem

1. U1D5, Lecture: Gravitational Potential EnergyHomework Due: Work-KE Theorem January 27th (odd) or January 28th (even)

2. Agenda • Day 6 HW Quiz (10 min) • Day 5 HW Quiz Reflection (6 min) • Day 6 HW Quiz Review (10 min) • Intro Activity (7 min) • Booklet Notes (7 min) • Practice on Potential Energy (10 min) • Update Learning Log (5 min) • Break (5 min) • Project Work Time (40 min) • Write Down HW (5 min)

3. Homework Quiz on “Kinetic Energy” • 10 minutes • 2 different forms • Calculator (multiplying)

4. Reflect on F’s HW Quiz • Based on your score, does this change any ofyour numbers in your learning log (1/27 or 28)? • Knowledge Targets: #7 • 5: No Idea • 6: Heard it before • 7: Recall definition • 8: Recall definition & simple calculations • 9: Total beast Average for Students who Took Notes: 9.0 Average for Students who did NOT Take Notes: 7.2

5. Homework Quiz Review • Kinetic Energy Equation? • Work-KE Theorem Equation?

6. Homework Quiz Review • What is the kinetic energy of a 5kg box moving at 9m/s?

7. Homework Quiz Review • What is the work done on a 5kg box that goes from 9m/s to 12m/s? Positive or Negative?

8. Homework Quiz Review • What is the work done on a 5kg box that goes from 9m/s to 7m/s? Positive or Negative?

9. Intro Activity • Start the tennis ball at someone’s face • Let the tennis ball drop (just let go!) • Observe what happens

10. In your notebooks… • Draw what happened • Where did it have the most potential energy? • Energy due to position • Where did it have the most kinetic energy? • Energy due to motion

11. Booklet Notes • On page 11 of your booklet: “Potential Energy”

12. Potential Energy Practice • Gravitational potential energy equation? • Work and Potential Energy Equation?

13. Potential Energy Practice • A 75kg man is standing on the edge of a table 1.5m above the ground. What is his potential energy?

14. Potential Energy Practice • A girl jumps a vertical distance of 2.3m. At the top of her jump (when she is at rest momentarily), her potential energy is 1,590J. What is her mass?

15. Potential Energy Practice • A 2kg rock is nudged off of a 15m cliff. After the rock has fallen 4m, what is the work gravity has done on the rock?

16. Update Learning Log • Knowledge Targets: #9, #10 • Reasoning Targets: F • 5: No Idea • 6: Heard it before • 7: Recall definition • 8: Recall definition & simple calculations • 9: Total beast

17. 5 Minute Break

18. Store • Each ticket will get you a certain amount of a material • You cannot get multiple of the same materials • Paper is unlimited

19. Brainstorming • Based on the materials you have or will have in the future • Brainstorm 12 different steps: • Must have different causes and effects! • Brainstorm 3 simple “Final Tasks” related to your topic • Recall Specifications • Only Step 1 has human interaction • One object rises to max of 2 feet • A different object falls to min of 0 feet • 8 Steps minimum. A step: Cause  Effect • 30 seconds to 5 minutes

20. Step #1 Cause: Effect: Step #2 Cause: Effect: Step #3 Cause: Effect: Step #4 Cause: Effect: Our Topic: __________________ Final Task Ideas: 1: _________________ because… 2: _________________ because… 3: _________________ because… Step #12 Cause: Effect: Step #5 Cause: Effect: Step #11 Cause: Effect: Step #6 Cause: Effect: Step #10 Cause: Effect: Step #9 Cause: Effect: Step #8 Cause: Effect: Step #7 Cause: Effect:

21. Project Work Time • Brainstorming must be approved • Work time; everyone should be participating • DUE AT END OF PERIOD: Brainstorming Sheet

22. Homework • Watch Video on “Conservation of Energy” • Bring more materials to work on Rube Goldberg