October 1, 2012

Happy October

Physics

Bellwork:
    1.  A plane flying with a horizontal velocity of 240 m/s drops a package from a vertical height of 4500    
    meters.  Determine the amount of time that the package dropped and the horizontal distance it  traveled
    prior to striking the ground.

    2.  A careless person drops a cup from his car window while driving.  If the person where driving with a     constant velocity of 45 m/s and the cup fell for a time of 0.8 seconds, how high was the cup dropped    
    from and how far did it travel from the initial point of drop.

Hand in the projectile motion lab and one page write-up on balloon launch.

Check and go over the projectile motion problems.

Discuss projectile motion method of solving problems.

HW:  Additional Practice Problems on Projectile Motion

**Quiz on Wed.**


Physical Science A
Bellwork:
    1.  What are the two types of friction?  Explain each.

    2.  Which type of friction seems to be larger, i.e. which requires that largest amount of force to    
         overcome?

    3.  Draw a velocity vs. time graph that shows an object
                a.  traveling at a constant velocity
                b.  increasing velocity, constant acceleration.

    4.  What is the acceleration of a student who realizes that he will be late to first hour if he take off from    
         his locker and reaches a speed of 4.5 m/s in a time of 9 seconds?

Objective:
    1.  List and describe the typical force that you experience and interact with on a daily basis.

    2.  Draw vector diagrams (arrows with magnitudes) that Identifies the magnitude and direction of     everyday forces (e.g., wind, tension in ropes, pushes and pulls, weight).

    3.  Describe the different types of friction and how they affect the motion of an object.

Discuss, check, and go over the friction lab.

Check and go over the 2nd law of motion problems.  Use the whiteboards to check.

Discuss the 2nd Law of motion and the force of gravity.
Scavenger Hunt:  Each group will have a list of clues.  You will have to guess what the object is and use the scale in the room to measure the mass of the object.  Once you have the mass, you will use this information to calculate force of gravitational attraction between you and the object.

HW: Finish the calculations from the scavenger hunt.