||Process Standards: 3.2, 3.3, 4.3,
4.6, 4.8, 6.2, 6.3, 6.4 |
Content Standards: 2.1, 3.1
Instructional Technology Standards: 2.1, 4.1, 4.2, 4.3, 4.4
The Bayless High School Physical Science Class changes from a chemistry class to a physics class for the second semester. Physics is the study of the relationships between matter and energy.
Most of what you will study this semester can be called Newtonian Physics. Named for Sir Issac Newton, it deals mainly with the interactions of visible objects around us. The laws of Newtonian Physics serve as the foundation for beginning physics students. As you learn more, you will see that physics explains the universe in mathematical terms.
|Mathematical calculations in physics are very formal.|
All problems should be worked as follows:
Rewrite the equation with the known numbers plugged into the equation.
Punch buttons on your calculator.
Write the answer with its proper units.
Circle the answer.
This must be done to receive full credit for physics calculations.
|What is a reference point?|
Reference point: the point from which movement is determined.
|Use the Factor Label Method for speed calculations.|
Average speed: the speed of moving objects is not always constant:
|Velocity: speed in a given direction.
Velocity gives distance, time, and the direction of travel.
Velocity is known as a vector quantity because it has both speed and direction. Vectors can be use to graphically represent the mathematics of motion. The length of the line represents the quantity (speed) and the arrow indicates the direction.
The vector diagram here might represent the motion of an airplane. The first blue arrow shows the speed and heading of the plane. The second blue arrow shows the speed and direction the wind is blowing. Since the wind is changing the speed and direction of the plane, the two vectors are added, head to tail, to determine the actual speed and direction traveled. If the length of the blue vectors is drawn to scale, the length of the red vector will indicate the actual velocity of the plane.
- Use at least one paragraph to respond to this reference point situation.You are a passenger in a car stopped on the side of a hill. Out of the corner of your eye, you notice a tree on the side of the road begin to move forward.
- Work the following speed calculations:
- An airplane travels 500 miles in 2.5 hours. What is the speed of the plane?
- A toy car rolls down a ramp covering 24 feet in 6 seconds. What is its speed?
- A top fuel dragster covers the quarter mile in 4.5 seconds. What is its speed in miles per hour?
- A rifle bullet travels 6000 feet in 4 seconds. What is the speed of the bullet?
|With your table, discuss the following thought experiment. Be
able to use one sentence to describe the boundary you have discovered
surrounding your world.
Your world has three dimensions; length, width, and height. Your experience in life involves motion in all three dimensions.
|How are speed and velocity different?|
Computer Assignment 193:
This assignment must be completed by the end of class today to receive credit.
- Search Google for Sir Isaac Newton. Find the following:
- In what year was Newton born?
- In what year did Newton die?
- Find a picture of Newton and copy it.
- Paste Newton's picture on the left side of a PowerPoint slide with this layout.
- Title the slide "Newtonian Physics".
- Type the year of Newton's birth and death on the right side of the slide.
- There are many different ideas about the baseball pitch known as a "curveball". There are even people that will tell you it is an optical illusion! Explore the two websites below.
The Exploratorium NASA
Make another PowerPoint slide with this layout.
- Drag and drop a picture from one of the websites on the slide.
- Write a short description on the slide about "Why curveballs curve".
Show the completed slides to your science facilitator.
Use this Java applet to experiment with a curveball.
|What does the slope of the line on a distance-time graph represent?|
Distance - Time Graph:
Computer Assignment 194:
This assignment must be turned in by the end of class today to receive credit.
- Use PowerPoint to make a graph of this person's motion:
A person walks 100 meters in 50 seconds, stops to rest for 30 seconds,
then runs back to the starting point in 15 seconds.
Portfolio assignment 192, optional assignment #3. These
answers are rounded off:
A reference point is the point assumed to be unmoving by
which motion is described.
Velocity describes direction while speed does
The slope of the line on a distance-time graph represents
A reference point is the point assumed to be unmoving by which motion is described.
Velocity describes direction while speed does not.
The slope of the line on a distance-time graph represents speed.