2/12/09
Post date: Feb 12, 2009 9:7:32 PM
Bell Ringer: Write a question like one you expect to see on tomorrow's test and answer it.
Review procedure for solving acceleration problems (in the chapter 4 notes, reviewed here)
Draw it out - this helps us to understand what's happening in the problem and what variables we'll be dealing with.
Write the values for each piece of given information with the variable we use in the equations (e.g. The problem tells me that an object starts at rest, so I write down vi = 0 m/s
Write down the unknown variable which you are trying to solve for.
Pick out an equation from the 4 acceleration equations. Choose an equation that uses the same variable that the problem either gives you or asks about (e.g. If the problem asks me to find acceleration, I need an equation that has "a" in it. If that problem gives me a displacement, my equation should have "d" in it as well.)
Plug in the known values and solve for the unknown. Be sure to include units and box your final answer.
Spend 10 seconds considering your answer, and whether or not it makes sense in this situation. (e.g. If you found that it takes a car 500,000 seconds to accelerate from 0 to 10 m/s ... you should probably go back and check your work.)
Finish your chapter 4 assignments, from the chapter 4 review. Since I was gone yesterday and couldn't answer your questions, we'll make these assignments due tomorrow (Friday)
Make sure you bring your bell ringers tomorrow. These will be turned in and are worth 2 points each. Check through the notes section of this web site to make sure you have each bell ringer answered.