# U1D5, Lecture: Gravitational Potential Energy Homework Due: Work-KE Theorem January 27 th (odd) or January 28 th (even)

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

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)

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

Reflect on F’s HW Quiz  Based on your score, does this change any of your 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

Homework Quiz Review  Kinetic Energy Equation?  Work-KE Theorem Equation?

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

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

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

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

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

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

Potential Energy Practice  Gravitational potential energy equation?  Work and Potential Energy Equation?

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

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?

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?

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

5 Minute Break

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

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

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

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

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

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