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We spent the entire period today reviewing for the exam tomorrow covering newton’s second and law and newton’s third law.

Homework: study study study

1.  Minimum day today, so only 30 minutes of class.  We went over the answer key to the chapter 7 problem set

2.  We discussed the details of how a helicopter actually works and how a rocket can go through space when there is no air in space.

3.  Mr. Kleiner pointed out that the exam #2 tips sheet is posted to the website and students should review it tonight.  Tomorrow we will review for the exam.

Homework: study for test

Check it out here

1.  Today performed the friction lab.  We took wooden blocks and slid them across different materials in order to determine the coefficient of friction for each material combination.

2.  Mr. Kleiner stamped student homework that was due.

3.  We spent the last 10 minutes of class discussing the collapse of Washington Mutual (WaMu) and the government’s proposed $700 Billion bailout plan.

Test on chapter 6 and 7 is next week.  No homework other than getting ready for this test.  Have a nice weekend!

1.  We went over the answers to the second and third law worksheet.  Those who did not need explanation on the problems read quietly in the back of the room or made posters depicting Newton’s 2nd and/or 3rd law.

2.  Mr. Kleiner gave a lecture on how we walk on the earth, jumping off of the earth, and falling to the earth from the perspective of newton’s third law.

3.  We watched a video clip of a rifle and a bullet from hewitt.  We also watched a video clip of two people pulling on a string from hewitt.

4.  Mr. Kleiner mentioned that our next test will be on Wednesday, October 1.

homework: problems 8,10,11,14,18,20,21,25,28,29,30 from chapter 7

1.  We went over the answers to yesterday’s problem set.  Mr. Kleiner introduced the “magic triangle” that allows you to determine the normal force when an object is sliding down an angled surface.

2.  We began a small lecture on newton’s third law, discussing how the earth does indeed accelerate away from us when we push on it.

homework: newton’s second and third law worksheet

1.  We took a quiz on chapter 7

2.  Students broke up into teams and went over the answer key for the homework assignment covering problems 3, 9, 14, 15, 18, 24-31, 36, 37, 42, 55, 58, 62, 63, 67 from chapter 6.

3.  We watched a 5 minute video clip of sky diving from the movie “Point Break”

4.  Exam #1 was given back to students and students were able to review the answer key in the back of the room.

Homework: complete the friction and pressure worksheet

Mr. Kleiner was not in class today.  There was a substitute.  The assignment in class was to read all of chapter 7 and be prepared for a quiz tomorrow.  If students finished reading early, then the rest of class was quiet study hall.

1. Due on Monday problems 3, 9, 14, 15, 18, 24-31, 36, 37, 42, 55, 58, 62, 63, 67 from chapter 6 2. Please read the following article in preparation for tomorrow’s special lecture: http://online.wsj.com/article/SB122143670579134187.html

1.  We took a quiz on 6.5 to 6.7

2.  Mr. Kleiner gave a lecture covering pressure (bed of nails, knife, sharpness, the source of friction and the uneveness of surfaces), air resistance, WHY all objects accelerate at 9.8 m/s², terminal velocity.

3.  We watched a video of Paul Hewitt breaking a block of cement over a man pressed between two beds of nails.  We also watched a video of Paul Hewitt explaining terminal velocity.

Homework: see the next post!

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