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Energy Lab Discussion

Energy Lab Discussion

Q This assignment supports the following Unit Objectives: • (U109) State and apply the Law of Conservation of Energy (CLO2)(CLO4) • (U110) Calculate work and energy using appropriate units (Joules and Foot-pounds). (CLO2) • (U111) Discuss the components needed for work to occur (CLO4) • (U112) Define energy and work. (CLO2)(CLO4) • (U113) Discuss the difference between kinetic and potential energy. (CLO4) • (U114) Calculate kinetic and potential energies. (CLO2) • (U115) Define and calculate power based on work, energy and time. (CLO2)(CLO4) • (UDS) Develop a well thought out and correct response to various discussion questions (CLO2)(CLO4)(Goal 4) Do not start a new thread. Simply reply to my posting. Be sure to comment on at least two of your classmates' postings. Your replies must be more than a simple phrase like "I agree" or "I like your answers". Replies should reflect on why you agree or like what has been posted. Your replies must reflect a genuine effort to engage your fellow classmates regarding the comments provided or the problem that has been solved. Please post your responses here. 1. Throwing a shot put, you apply a force of 100 N while extending your arm 1 m. If the shot put flies 10 m, How much work did you do? Explain how you did your calculation. **Note that the numbers were chosen for simplicity, not realism. 2. You race a child that is exactly half your mass up identical ladders. If you took 5 s, and the child took 7 s, who did more work? Who had greater power? 3. Explain what happens to the energy of a ball initially at rest that falls down a hill and up another hill. You can ignore friction. 4. Name two subtypes of kinetic and potential energies each (e.g. chemical energy is potential - no you cannot use this as one of your examples)

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1. The work i did was 1000, i got this answer by dividing the force of the shot put by the distance of the shot put. 2. If I race a kid who is half of my mass up identical ladders, the kid would be the one to who does more work because simply it took the kid longer to go up the ladders. I am the one who has greater power because I am bigger and faster.