Lecture HomeWork 9

Physics 121, Fall 2010

Prof. E. F. Redish

Lecture homework consists of 2 parts. Since a lot of the problems this week require diagrams and tools that are not available in MP, most of the problems will have to be done on paper.

• One part is to be done online in the MasteringPhysics (MP) environment. This includes a few MP problems plus a few problems from my collection. The MP problems will be exercises, worth 1 or 2 point eachs. You may use any hints that are available and you can do them as many times as you want. The problems from my collection are worth 2-3 points each
• The second part are problems from my collection. It should be prepared carefully and neatly on paper (preferably on a computer and printed out).
  • Please be certain to put your name and section number on every page
    and do NOT CONNECT THE PAGES with staples, clips, tape, or dogears.
    Connecting them may result in you homework being damaged or destroyed.

Homework Assignment 9L
(Due Friday, 11/5/10)

To be done on paper and handed in at the beginning of lecture on Friday (the 5 pts problem should be typed and printed).

1. Energy-skate park (5 pts)

To be done in the MP environment. 2 MP problems plus the following:

2. Launching a ball up a ramp (2 pts)

3. Hybridizing your car (2 pts)

4. Pushing a Porsche (2 pts)

5. Potential energy analogs for chemical reactions (2 pts)

RETURNS

University of Maryland	Physics Department	Physics 121 Home

Last revision 28. October, 2010.