11-12-08

Today is November 12 2008                        J.R. Martin TPJ 2

The first thing we did in class was a homework check. The homework check was on page 17 and 18 called **Newton's 2nd Law, mass, and Weight**

We had to right down all the parts of question 4, on page 18.

A.) What was the mass on Earth?       -        20kg

B.) What is the mass on Mars?    -    20kg

C.)  What is his weight on Earth?    -   20kg X -9.8 m/s squared                -196N

D.) What is his weight on Mars?     -  20kg X -3.72m/s squared               -74.4N

After we had the homework check we went over the work to get all the answers.

After that we had a Daily Question

The Daily Question was - A rocket becomes progressively easier to accelerate as it travels through space. Why is this so?

One answer is that the farther away the rocket goes from Earth the less gravity affects it so it can accelerate faster. There are many other answers.

After the DQ we got a new packet called **Drawing Free Body Diagrams** pages 19 through 21.

Then we went over all the different types of forces that act on on object. They are listed and explained in the packet shown below.

/Users/student/Desktop/CIMG0337.JPG We have to do numbers 1- 10 on page 21 for homework due thursday. This is a picture of the Homework that is due on thursday November 12

/Users/student/Desktop/CIMG0338.JPG

This class is very important to know what one is doing because it is brand new and we just learned it. So it would be a bad thing to miss this exciting class. If by some chance one did miss this class one should go to see Mr. Manning the next time one is in class to get the papers.

/Users/student/Desktop/CIMG0356.JPG