Wed. October 3, 2012

Physics

Go over a couple of example problems.

Quiz: Projectile Motion

When you are finished with the quiz.  Please begin reading all of chapter 4 and section 5.2 of chapter 5. 

While reading and taking notes is will be handy to answer the following questions:

            What is a force?

            What are some common examples of forces?

            What happens when more than one force acts on an object?
   
            What are the laws related to forces?

Discuss what forces are, how we describe them, and how we draw simple vector diagrams/free body diagrams to analyze a situation.

HW: Free Body Diagrams.  Draw the free body diagram for the situation given.  If forces are there are two forces that are in the same or opposite direction, identify the net force or if they are equal.


Physical Science A
Bellwork:
    1.  Using your knowledge of the material up to this point, write a math problem for the following     concepts: Acceleration, Newton's Second Law, and Weight.  When you have finished, quiz the person     to the right of your seat.

    2.  Explain what happens to the gravitational force between two object when the size of one of the     objects is tripled?  What happens to the force if the distance between the objects is cut in half.

    3.  How does the acceleration of a bowling ball and the acceleration of a marble compare to each other     if they are dropped at the same time from the same height?

Objective:
    -Explain the factors used to calculate the weight of an object. 
    -Explain how pressure relates to applied forces and how the applied pressure is calculated.

Check and go over the weight problems

Demo:
    -dixie cups, student in a bag, bed of nails, snow shoes, ice rescue

Discuss pressure

Demo:
    -glass bottle/hydraulics

HW:Pressure problems worksheet